FCC ID: 2ARVF-MLU-X1001 MLU-X1001 Accelerator

MLU-X1001 Accelerator Product Manual V0.9.3 2020.10.30 Cambricon Directo 1. Preface..........................................................................................................................................1 1.1. Copyright Declaration..........................................................................................................1 1.2. Versioning............................................................................................................................. 2 1.3. Update history...................................................................................................................... 2 2. Overview...................................................................................................................................... 3 3. Product Specification Overview................................................................................................. 4 3.1 Overview of Product Specification Parameters.................................................................. 4 3.2 Overview of structural specifications...................................................................................4 3.3 Overview of electrical specifications....................................................................................5 3.4 Summary of heat dissipation specifications....................................................................... 6 4. Component Profile......................................................................................................................7 4.1 MLUX-BB 1............................................................................................................................ 7 4.2 MLUX -PA4............................................................................................................................ 9 4.3 MLUX -PDB............................................................................................................................9 4.4 MLUX -LINKB...................................................................................................................... 10 4.5 MLUX -IBB........................................................................................................................... 10 4.6 Front panel.......................................................................................................................... 11 4.7 Back panel............................................................................................................................12 5. Electrical specifications............................................................................................................. 13 5.1 PCIE topology description..................................................................................................13 5.2 MLU-LINK interface description........................................................................................ 14 5.3 Power Interface Description...............................................................................................16 6. BMC management system....................................................................................................... 18 Copyright 2020 Cambricon Corporation i Cambricon 6.1 BMC function description...................................................................................................18 7. Heat dissipation specifications.................................................................................................19 7.1 Description of the heat dissipation environment.............................................................19 7.2 Wind resistance curve of MLU-X1001.............................................................................. 20 8. Optional components...............................................................................................................21 8.1 PCIE High Speed Cable...................................................................................................... 21 8.2 MLU-LINK High Speed Cable............................................................................................ 21 8.3 Network............................................................................................................................... 21 8.4 Hard disk..............................................................................................................................22 9. Cambricon NeuWare development environment..................................................................23 10. Compliance..............................................................................................................................24 Copyright 2020 Cambricon Corporation ii C ambricon 1. Preface 1.1. Copyright Declaration Disclaimer Cambricon Technologies Corporation Limited(hereinafter referred to as "Cambricon ") does not represent, implied or statutory) or guarantee the information contained in this document and guarantee (express, expressly waives any and all implied guarantees of saleability, ownership, non-aggression of intellectual property or applicability for a specific purpose, and cambricon does not assume any liability arising from the application or use of any product or service. cambricon shall not be liable for any breach of contract, damages, costs or problems arising from :(1) any way of using cambricon products contrary to this Guide; or (2) customer product design. Limitation of liability In no case shall Cambricon be liable for any damage caused by the use or inability to use this Guide

(including but not limited to damage such as loss of profits, business disruption and loss of information), even if Cambricon has been advised that such damage may be suffered. Although the customer may suffer any damage for any reason, according to the terms and conditions of sale of the products of the Cambricon, the total and cumulative liability of Cambricon to the customer for the products described in this Guide shall be limited. Accuracy of information The information provided in this document is owned by Cambricon and Cambricon reserves the right to make any changes to this document information or to any products and services without notice. The information contained in this guide and all other information of the Cambricon documents cited in this guide are provided "as is ". Cambricon does not guarantee the accuracy or completeness of information, texts, patterns, links or other items contained in this guide. Cambricon may make changes to this Guide or to the products described in this Guide without notice, but does not undertake to update this Guide. The performance tests and grades listed in this guide are to be measured using a specific chip or computer system or component. After such tests, the results shown in this guide reflect the general performance of Cambricon products. Any difference in system hardware or software design or configuration will affect actual performance. As mentioned above, Cambricon does not represent, warrant or guarantee that the products described in this Guide will apply for any particular purpose.Cambricon does not represent or guarantee testing all parameters of each product.The customer is solely responsible for ensuring that the product is suitable and applicable to the application of the customer plan and for performing the necessary Copyright 2020 Cambricon Corporation 1 Cambricon tests on the application, with a view to avoiding the default of the application or product. The fragility of customer product design can affect the quality and reliability of Cambricon products and lead to additional or different circumstances and/or requirements beyond the scope of this guide. Notice of Intellectual Property The Cambricon and Cambricon symbols are trademarks and/or registered trademarks of Cambricon Technologies Corporation Limited in the United States and other countries. Other companies and product names shall be trademarks of the respective companies associated with them. This guide is copyrighted and protected by the provisions of copyright laws and treaties worldwide.This guide can not be reproduced, reworked, modified, published, uploaded, published, transmitted or distributed in any way without the prior written permission of Cambricon. Except for the customer's right to use this guide information and products, according to this guide, Cambricon does not grant any other express or implied rights or permits. It is doubtful that the Cambricon does not grant any (express or implied) rights or permits to the customer based on any patent, copyright, trademark, trade secret or any other Cambricon intellectual property or ownership. Copyright Declaration 1.2. Versioning Cambricon Technologies Corporation Limited reserves all rights. Table 1.1 Version Record MLU-X1001 accelerator Product Manual Document name Version number Author Date created V0.9.3 Cambricon 2020.10.30 1.3. Update history Update time: 2020.07.10

- Initial version. Update time: 2020.10.30 V0.2.0 Update:

V0.93 Update:

of the button battery.

- Modify the external interconnection name as MLU-Link, update the HBM rate, and add warning Copyright 2020 Cambricon Corporation 2 Cambricon 2. Overview MLU-X1001 accelerator is a construction unit of artificial intelligence supercomputing. The extender inherits 4 MLU290-M5 intelligent accelerating cards, and provides up to 2 POPs of adaptive precision computing power. The supercomputing system from 4 cards to 16 cards is constructed by using the Cambrian MLU-LINK inter chip direct connection technology, which provides a highly agile, highly reliable and high-performance computing foundation for the Artificial Intelligence Computing Center. Copyright 2020 Cambricon Corporation 3 Cambricon 3. Product Specification Overview 3.1 Overview of Product Specification Parameters MLU-X1001 accelerator Specification Parameters are as follows :

Specification indicators Table 3.1 MLU-X1001 Specification Parameters Model Core architecture Core frequency Video decoding Memory capacity ECC protection System interface MLU-LINK external interface MLU-LINK interface bandwidth TDP power consumption Note MLU-X1001 Cambricon MLUv02 1.3GHz Support 192GB Yes 2* PCI Express 4.0x16 8Ports 8*100 GB /S 2300W Calculation accuracy support INT16,INT8,INT4,FP32,FP16 Heat dissipation scheme Air-cooled, compatible with liquid-cooled 3.2 Overview of structural specifications The structure specifications of the MLU-X1001 accelerator are as follows:

Specification indicators Note Table 3.2 Structural Specification for MLU-X1001 Shape 437mm*87mm*735mm Copyright 2020 Cambricon Corporation 4 Cambricon Weight Package Shape Package Weight Bending radius of cable:

1000mm*635mm*230mm 29Kg 39Kg Wire diameter 30 AWG 26 AWG Table 3.3 Specification for cable bending Bending radius L1 Bending radius L2 Base on the cabinet column Base on the chassis 97.45 mm 121.64 mm 78.5 mm 102.7 mm Figure 3.1 Bending radius of cable 3.3 Overview of electrical specifications MLU-X1001 accelerator electrical specifications as follows:

Table 3.4 Electrical Specification for MLU-X1001 Specification indicators System interface Number of PCIE ports PCIE bandwidth Number of MLU-LINK ports MLU-LINK bandwidth Note PCIE Gen 4X 16 2Ports 128GB /s 8Ports 800GB /s Copyright 2020 Cambricon Corporation 5 Cambricon BMC management interface Host management interface IPMI V2.0 SMBUS AC 115-127V,14,2A, 60/50Hz Input voltage AC 200-240V,14.9A, 60/50Hz DC 240V, 16A(China mainland only) 3.4 Summary of heat dissipation specifications The heat dissipation specification of MLU-X1001 accelerator is as follows:

Table 3.4 Heat dissipation specifications of MLU-X1001 Specification indicators Note Working temperature 0-35, altitude of 900m below Working humidity Storage temperature Storage humidity 20%RH-85%RH

-4075 5%RH-95%RH Noise SDP @23, sound power 7.2 bels Working altitude 3000 m (900-3000m, for each increase of 300 m supported working temperature drop 1) Copyright 2020 Cambricon Corporation 6 Cambricon 4. Component Profile 4.1 MLUX-BB 1 MLUX-BB 1 is the baseboard which carries MLU290-M5 Intelligent processing card. Each MLUX-BB 1 can carry 4 MLU290-M5 intelligent accelerating cards. The details are shown in the following figure:

Figure 4.1 MLUX -BB1 graphic Table 4.1 MLUX -BB1 Description Serial Note Serial Note Copyright 2020 Cambricon Corporation 7 Cambricon number number 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 MLU-LINK-0A &0B MLU-LINK-2A &2B MLU-LINK-1A &1B MLU-LINK-1A &1B PCIE 0 PCIE 1 IPMI UID COM HUB0 COM HUB1 COM HUB2 AC INDICATOR FRONT PANEL CONN. PDB MGT.CONN. OAM MODULE 0 16 17 18 19 20 21 22 23 24 25 26 27 28 29 OAM MODULE 2 OAM MODULE 1 OAM MODULE 3 F AN 4 F AN 3 F AN 2 F AN 1 F AN 0 PCIE SWITCH 0 PCIE SWITCH 1 54V POWER BUSBAR HANDLE 0 HANDLE 1 FRONT PCIE CONN. Copyright 2020 Cambricon Corporation 8 Cambricon 4.2 MLUX -PA4 MLUX -PA4 is a PCIE board, which is placed on the host server and provides Mini SAS HD interface for connection with MLU-X1001.The details are shown in the following figure:

Figure 4.2 MLUX -PA4 graphic Serial number 1 2 Table 4.2 MLUX -PA4 Description Note Note Serial number mini SAS HD CONN. 3 PCIE GOLDEN FINGER PCIE RETIMER 4.3 MLUX -PDB MLUX -PDB is the power distribution board.The details are shown in the following figure:

Figure 4.3 MLUX -PDB graphic Table 4.3 MLUX -PDB Description Serial number Note Note Serial number Copyright 2020 Cambricon Corporation 9 5 6 7 8 5 6 7 8 1 2 3 4 1 2 3 4 Cambricon 54V POWER BUSBAR PSU CONN.0 PSU CONN.1 INTRUTION SSD POWER CONN.0 SSD POWER CONN.1 PDB MGT.CONN. 12V POWER BUSBAR 4.4 MLUX -LINKB MLUX -LINKB is passive connection board.The details are shown in the following figure:

Serial number Figure 4.4 MLUX -LINK B graphic Table 4.4 MLUX -PDB Description Serial number Note SSD MGT.CONN.0 SSD MGT.CONN.1 OCULINK 0 OCULINK 1 Note OCULINK 2 OCULINK 3 IBB CONN. FRONT PCIE CONN. 4.5 MLUX -IBB MLUX-IBB is the backplane of Infiniband card. Each MLUX-IBB can place two Infiniband cards.The details are shown in the following figure:

Copyright 2020 Cambricon Corporation 10 Cambricon Figure 4.5 MLUX -IBB graphic Table 4.5 MLUX-IBB Description Serial number 3 Note IB SLOT 1 Serial number 1 2 Note IBB CONN. IB SLOT 0 4.6 Front panel The front panel of the chassis is shown as follows:

Figure 4.6 Front panel of chassis Table 4.6 Description of front panel of chassis Serial number 1 2 3 4 5 Note Switching keys UID keys Reset button PSU 0 PSU 1 Serial number 7 8 9 10 11 Note SSD 1 SSD 2 SSD 3 NIC 0 NIC 1 Copyright 2020 Cambricon Corporation 11 Cambricon 6 SSD 0 4.7 Back panel The rear panel of the chassis is shown as follows:

Figure 4.7 Rear panel of chassis Table 4.7 Description of rear panel of chassis Serial number Serial number Note PCIE 0 PCIE 1 MLU-LINK-0A MLU-LINK-0B MLU-LINK-2A MLU-LINK-2B MLU-LINK-1A MLU-LINK-1B MLU-LINK-3A 10 11 12 13 14 15 16 17 18 MLU-LINK-3B Note IPMI UID COM HUB 0 COM HUB 1 COM HUB 2 AC INDICATOR POWER CORD 0 POWER CORD 1 1 2 3 4 5 6 7 8 9 Copyright 2020 Cambricon Corporation 12 Cambricon 5. Electrical specifications 5.1 PCIE topology description MLU-X1001 accelerator uses 2 miniSAS HD interfaces to connect with the host server, and there are 2 PCIE switching chips to connect the PCIE devices inside.PCIE interconnection topology is shown as follows:

Figure 5.1 PCIE Connection topology PCIE signal rate is 16 Gbps, and the cable loss is controlled within 15 dB @8GHz. It is recommended to use 1 meter cable with a diameter of 30 AWG. The pins of the miniSAS HD connectors used by PCIE interfaces are defined as follows:

Copyright 2020 Cambricon Corporation 13 Cambricon RX [15:0]P/N TX [15:0]P/N SMCLK SMDAT PERST#

miniSAS HD pin Note Pin internal processing Table 5.1 PCIE Interface pin definition PCIE input signal PCIE output signal External AC coupling capacitance External AC coupling capacitance SMBUS interface clock signal 4.7 K pull-up to 3.3 V SMBUS interface data signal 4.7 K pull-up to 3.3 V Reset signal REFCL K P/N PCIE clock signal PRESENT Opposite side in position detection signal 4.7 K pull-up to 3.3 V 5.2 MLU-LINK interface description MLU-X1001 accelerator is equipped with 4 MLU290-M5 intelligent accelerating cards, each card has 6 MLU-LINK ports. Among them, 4 ports are used for internal interconnection and 2 ports are used for interconnection. The MLU-LINK interconnection topology between the internal cards is as external follows:

Copyright 2020 Cambricon Corporation 14 Cambricon Figure 5.2 MLU-LINK internal connection topology MLU-LINK interconnection between extenders refer to the following figure:

Figure 5.3 External MLU-LINK connection reference The signal rate of MLU-LINK is 50 Gbps, and the cable loss is controlled within 10 dB @12.5GHz. It is recommended to use 1 meter cable with a diameter of 30 AWG or 2 meter cable with a diameter of 28 AWG . MLU-LINK interface uses QSFP DD connectors whose pins are defined as follows:

QSFP-DD pins Note Internal processing of Table 5.2 MLU-LINK Interface pin definition Copyright 2020 Cambricon Corporation 15 Cambricon RX [8:1]P/N capacitance inside SERDES signal input with AC coupling External AC coupling TX [8:1]P/N capacitance inside SERDES signal output with AC coupling External AC coupling pins capacitance is not required capacitance is not required I2C interface clock signal of optical module 4.7 K pull-up to 3.3 V I2C interface data signal of optical module 4.7 K pull-up to 3.3 V ModPrsL Optical module in position signal output 4.7 K pull-up to 3.3 V Selection signal of optical module, default 1K pull-down to GND pull- up inside Reset signal, low level effective 4.7 K pull-up to 3.3 V Interrupt signal of optical module, OC gate, 4.7 K pull-up to 3.3 V low level indicates an interrupt signal InitMode Initialization mode 1K pull-down to GND VccRx,VccRx1,Vcc1,Vcc2 Power signal VccTx ,VccTx1 SCL SDA ModSelL ResetL IntL 5.3 Power Interface Description MLU-X1001 accelerator Input Power Requirements:

Table 5.3 MLU-X1001 Input Power Supply Specifications Input voltage Max. Input Current AC 115-127V,60/50Hz AC 200-240V,60/50Hz DC 240V (China mainland only) MLU-X1001 accelerator is able to reduce power consumption adjustment for instantaneous power changes above the s level. The power regulator can support power fluctuations within the ms level

(e.g .1.2 x TDP). Table 5.4 EDPp specifications of MLU-X1001 EDP TBD Copyright 2020 Cambricon Corporation 16 14.2A 14.9A 16A Duration TBD Cambricon Copyright 2020 Cambricon Corporation 17 Cambricon 6. BMC management system The BMC management system of MLU-X1001 is compatible with server management standards IPMI 2.0, with high reliability of hardware monitoring and management functions. 6.1 BMC function description MLU-X1001 accelerator BMC management system main functions and features as follows:

Function Note Table 6.1 BMC Functional description Remote control Management through SOL functions Information management Management of equipment model, asset information and version information Status monitoring Real-time monitoring of power supply, temperature, working status and other operating states information Heat dissipation control Modulate fan speed according to environment temperature, equipment working load and abnormal conditions Alarm management Report the alarm information in real time and deal with it accordingly WEB interface management Provides visual WEB interface for query and management IPMITool tool management Support IPMITool Note: Use button battery (Panasonic: CR2032) to power the RTC clock.If the battery is not replaced correctly, there is a risk of explosion. Copyright 2020 Cambricon Corporation 18 Cambricon 7. Heat dissipation specifications 7.1 Description of the heat dissipation environment The working environment of MLU-X1001 is as follows:

Table 7.1 Working environment of MLU-X1001 Items Specification parameters Working environment temperature 0~35 Relative humidity 20%~85% no condensation Noise 62~88 dBA Note: There will be 62~88dbA noise during normal operation. Please take adequate sound insulation measures in advance. MLU-X1001 air volume description:

MLU-X1001 can provide up to 360 CFM of air volume Do not block the front and rear ventilation areas of the chassis during operation of MLU-X1001 When installing MLU-X1001, please reduce the air resistance around the inlet and outlet of the chassis the system. Please follow the instructions to arrange the cable to minimize the air resistance of the air flue Please install the chassis cover before using MLU-X1001. If CXM1000 is used without the chassis cover, the components may be damaged. If you need to replace the fan, please make sure to complete within 25s to avoid overheating of Copyright 2020 Cambricon Corporation 19 Cambricon 7.2 Wind resistance curve of MLU-X1001 The system wind resistance curve of MLU-X1001 is shown below:

Figure 7.1 Wind resistance curve of MLU-X1001 Table 7.2 Air Volume VS Pressure Drop of MLU-X1001 Air volume (CFM) Air pressure (Pa) 400 360 310 260 0 1737 1408 1044 735 0 Copyright 2020 Cambricon Corporation 20 Cambricon 8. Optional components 8.1 PCIE High Speed Cable MLU-X1001 uses miniSAS HD high-speed cable for PCIE Gen4 interconnection.Compatible cable models are as follows:

Table 8.1 MLU-X1001 PCIE Compatible Cable Manufacturers Model Specifications Molex 2040431030 1 m ,30 AWG 8.2 MLU-LINK High Speed Cable MLU-X1001 uses QSFP-DD high-speed cable for MLU-LINK interconnection.Compatible cable models are as follows:

Table 8.2 MLU-X1001 MLU-LINK Compatible Cable Manufacturers Model Specifications Molex Molex TE TE 2015911012 1 m 30 AWG 2015913020 2 m 28 AWG 2366016-4 1 m 30 AWG 2366101-3 2 m 28 AWG 8.3 Network MLU-X1001 can use InfiniBand network card or ROCE network card for cluster interconnection. Compatible network card models are as follows:

Table 8.3 Network Card Compatibility Manufacturers Model Specifications Copyright 2020 Cambricon Corporation 21 Cambricon 8.4 Hard disk Mellanox MCX653105A-HDAT Half high and half long single PCIE 4.0 Compatible NVMe hard disk models for MLU-X1001 are as follows:

Table 8.4 NVMe Hard Disk Compatibility Manufacturers Model Specifications HGST HUSMR7619BHP301 NVMe 1.92Tb Copyright 2020 Cambricon Corporation 22 Cambricon 9. Cambricon NeuWare development environment NeuWare fully supports various mainstream programming frameworks (e.g. TensorFlow Caffe PyTorch and MXNet). For the above programming framework, users can easily develop and deploy deep learning applications on Cambrian MLU290-M5. At the same time, the NeuWare provides a complete runtime system and driver software to facilitate the rapid integration of the system. NeuWare also provides a range of tools including application development, function debugging, performance tuning, etc. Among them, application development tools include machine learning library, runtime library, compiler, model retraining tool and specific field (such as video analysis field) SDK;

function debugging tools can meet different levels of debugging requirements such as programming framework and function library; performance tuning tools include performance profiling tools and system monitoring tools. Figure 9.1 Cambricon NeuWare Copyright 2020 Cambricon Corporation 23 Cambricon 10. Compliance MLU-X1001 accelerator is compliant with the regulations listed in this chapter. The compliance marks can be found on the labels of each devices. FCC statement This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense. Caution: Any changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate this equipment. Underwriters Laboratories (UL) UL Listed Product Logo for MLU-X1001 Acceleratormodel name MLU-X1001. Copyright 2020 Cambricon Corporation 24

CAMBRICON TECHNOLOGIES Co., Ltd. MODEL: MLU-X1001 INPUT:115-127V~14.2A 50/60Hz c(U)us FCC ID: 2ARVF-MLU-X1001 INPUT:200-240V~14.9A 50/60Hz This device complies with part 15 of the FCC Rules. LISTED Operation is subject to the following two conditions: 505209

(1) This device may not cause harmful interference, and

(2) this device must accept any interference received, including interference that may cause undesired operation. =

11/F, Block D, Zhizhen Tower, No.7 Zhichun Road, Haidian District, Beijing, China

Cambricon Technologies Corporation Limited Authority to Act as Agent Date: 2021/10/29 American Certification Body, Inc. 6731 Whittier Avenue Suite C110 McLean, VA 22101 To Whom It May Concern:

_ Washington Technology International (Beijing) Ltd ___is authorized to act on our behalf, until otherwise notified, for applications to American Certification Body, Inc. (ACB). We certify that we are not subject to denial of federal benefits, that includes FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. 862. Further, no party, as defined in 47 CFR 1.2002 (b), to the application is subject to denial of federal benefits, that includes FCC benefits. Thank you, Agency Agreement Expiration Date: _____ 12 months_____ By:

(Signature1) ______Wang Dan___________

(Print name) Title:

___Certification Engineer_____________ On behalf of: Cambricon Technologies Corporation Limited _

(Company Name) Telephone:

010-83030003 1 - Must be signed by applicant contact given for applicant on the FCC site, or by the authorized agent if an appropriate authorized agent letter has been provided. Letters should be placed on appropriate letterhead. 022311 6

THIS MUST BE SIGNED BY THE APPLICANT/AGENT AND SHOULD BE PLACED ON APPROPRIATE LETTERHEAD Request for Confidentiality Date: 2021/10/29 Subject: Confidentiality Request for: 2ARVF-MLU-X1001______ Pursuant to FCC 47 CFR 0.457(d) and 0.459 and IC RSP-100, Section 12.4, the applicant requests that a part of the subject FCC application be held confidential. Type of Confidentiality Requested Short Term Short Term Short Term Short Term Short Term Short Term Short Term Short Term Short Term Permanent Permanent *1 Permanent Permanent Permanent Permanent Permanent *3 Exhibit Block Diagrams External Photos Internal Photos Operation Description/Theory of Operation Parts List & Placement/BOM Tune-Up Procedure Schematics Test Setup Photos Users Manual Cambricon Technologies Corporation Limited has spent substantial effort in developing this product and it is one of the first of its kind in industry. Having the subject information easily available to "competition" would negate the advantage they have achieved by developing this product. Not protecting the details of the design will result in financial hardship. Permanent Confidentiality:

The applicant requests the exhibits listed above as permanently confidential be permanently withheld from public review due to materials that contain trade secrets and proprietary information not customarily released to the public. Short-Term Confidentiality:

The applicant requests the exhibits selected above as short term confidential be withheld from public view for a period of ___180 ___ days from the date of the Grant of Equipment Authorization and prior to marketing. This is to avoid premature release of sensitive information prior to marketing or release of the product to the public. Applicant is also aware that they are responsible to notify ACB in the event information regarding the product or the product is made available to the public before the requested period has expired. ACB will then release the documents listed above for public disclosure pursuant to FCC Public Notice DA 04-1705. NOTE for Industry Canada Applications:

IC currently only distinguishes Permanent Confidentiality exhibits as shown above. Short Term confidentiality is not considered applicable to IC applications. Sincerely, By:_ __

(Signature/Title2) ________________ _____Dan Wang___________________

(Print name) 1 - The asterisked items (*) require further information to be provided to ACB before permanent confidentiality will be extended to these exhibits. Please refer to FCC KDB 726920 and the specific Document link for D01 found at:

https://apps.fcc.gov/oetcf/kdb/forms/FTSSearchResultPage.cfm?switch=P&id=41731 and review section II, 3) regarding specific information that must accompany these requests. 2 - Must be signed by applicant contact given for applicant on the FCC site, or by the authorized agent if an appropriate authorized agent letter has been provided. Letters should be placed on appropriate letterhead. 041521-14