FCC ID: 2AKC6-WB603 USB ADAPTER

Choose Yes, I want to restart computer now. NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

- Reorient or relocate the receiving antenna.

- Increase the separation between the equipment and receiver.

-Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.

-Consult the dealer or an experienced radio/TV technician for help Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. 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.

SHEN ZHEN XIN HUA TIAN TECHNOLOGY CO., LTD 3Floor, B Buliding, DaHong Industrial Park, GuangMin District, Shenzhen City, China Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: Jan. 03, 2023 Ref: Attestation Statements Part 2.911(d)(5)(i) Filing FCC ID: 2AKC6-WB603 Product Name: USB ADAPTER Model Name: WB603, 5B21D, XHT3510, RTL809

[SHEN ZHEN XIN HUA TIAN TECHNOLOGY CO., LTD] (the applicant) certifies that the equipment for which authorization is sought is not covered equipment prohibited from receiving an equipment authorization pursuant to section 2.903 of the FCC rules. Sincerely,

(Applicant signature) Name: Carmen Sun Title: General Manager

SHEN ZHEN XIN HUA TIAN TECHNOLOGY CO., LTD 3Floor, B Buliding, DaHong Industrial Park, GuangMin District, Shenzhen City, China Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: Jan. 03, 2023 Ref: Attestation Statements Part 2.911(d)(5)(ii) Filing FCC ID: 2AKC6-WB603 Product Name: USB ADAPTER Model Name: WB603, 5B21D, XHT3510, RTL809

[SHEN ZHEN XIN HUA TIAN TECHNOLOGY CO., LTD] (the applicant) certifies that, as of the date of the filing of the application, the applicant is not identified on the Covered List as an entity producing covered equipment. Sincerely,

(Applicant signature) Name: Carmen Sun Title: General Manager

SHEN ZHEN XIN HUA TIAN TECHNOLOGY CO., LTD 3Floor, B Buliding, DaHong Industrial Park, GuangMin District, Shenzhen City, China Agent Authorization Company: SHEN ZHEN XIN HUA TIAN TECHNOLOGY CO., LTD Address: 3Floor, B Buliding, DaHong Industrial Park, GuangMin District, Shenzhen City, China Product Name: USB ADAPTER Model Number(s): WB603, 5B21D, XHT3510, RTL809 Product Description: USB ADAPTER We authorize MiCOM Labs Inc., 575 Boulder Court, Pleasanton, California 94566, USA, to act on our behalf on all matters concerning the certification of above named equipment. We declare that MiCOM Labs Inc. is allowed to forward all information related to the approval and certification of equipment to the regulatory agencies as required and to discuss any issues concerning the approval application. Any and all acts carried out by MiCOM Labs on our behalf shall have the same effect as acts of our own. Signature:

Date: Jan. 03, 2023 Name:

Carmen Sun Title:

General Manager Company: SHEN ZHEN XIN HUA TIAN TECHNOLOGY CO., LTD

SHEN ZHEN XIN HUA TIAN TECHNOLOGY CO., LTD 3Floor, B Buliding, DaHong Industrial Park, GuangMin District, Shenzhen City, China Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Subject; Request for Confidentiality FCC ID: 2AKC6-WB603 Date: Jan. 03, 2023 To Whom It May Concern, Pursuant to the provisions of the Commissions rules Title 47 Sections 0.457 and 0.459, we are requesting the Commission to withhold the following attachment(s) as confidential documents from public disclosure indefinitely. These documents contain detailed system and equipment descriptions and are considered as proprietary information in operation of the equipment. The public disclosure of these documents might be harmful to our company and would give competitors an unfair advantage in the market. Schematic Diagram Block Diagram Operational Description Software Security Info In additional to above mentioned documents, in order to comply with the marketing regulations in Title 47 CFR 2.803 and the importation rules in Title 47 CFR 2.1204, while ensuring that business sensitive information remains confidential until the actual marketing of newly authorized devices, we request Short Term Confidentiality of the following attachment(s);

External Photos Test Setup Photos Internal Photos User Manual For 45 days, pursuant to Public Notice DA 04-1705. OR For 180 days pursuant to KDB 726920 D01. It is our understanding that all measurement test reports, FCC ID label format and correspondence during the certification review process cannot be granted as confidential documents and this information will be available for public review once the grant of equipment authorization is issued. Sincerely, Signature:

Name: Carmen Sun Title: General Manager

SHEN ZHEN XIN HUA TIAN TECHNOLOGY CO., LTD 3Floor, B Buliding, DaHong Industrial Park, GuangMin District, Shenzhen City, China FCC Software Configuration Control Declaration Date: Jan. 03, 2023 Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Attn: OET Dept. Product/ Model Number: WB603, 5B21D, XHT3510, RTL809 Regarding FCC Country Code Selection guidelines identified in KDB 594280 D01 v02r01. All applications for equipment authorization for transmitters that can have radio parameters, or other technical parameters, reported to the Commission set by software must have an attestation indicating that no third party will have software, or configuration control, to program the device out of compliance of the technical rules under which it has been certified. We declare that no third party will have software, or configuration control, to program the device out of compliance of the technical rules under which it has been certified. Name: Carmen Sun Title: General Manager Signature of applicant FCC Software Configuration Control Declaration Rev1.1

SHEN ZHEN XIN HUA TIAN TECHNOLOGY CO., LTD 3Floor, B Buliding, DaHong Industrial Park, GuangMin District, Shenzhen City, China Jan. 03, 2023 Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Subject: Explanation of differences between product types FCC ID: 2AKC6-WB603 Models: WB603, 5B21D, XHT3510, RTL809 To Whom It May Concern:

We, The SHEN ZHEN XIN HUA TIAN TECHNOLOGY CO., LTD hereby declare that the model : WB603 is identical with the model : 5B21D, XHT3510, RTL809, except of the appearance shape and model name are different. Except for the different above, no other modification is performed. Sincerely, SHEN ZHEN XIN HUA TIAN TECHNOLOGY CO., LTD Signature:

[Carmen Sun, General Manager]

[SHEN ZHEN XIN HUA TIAN TECHNOLOGY CO., LTD]

[3Floor, B Buliding, DaHong Industrial Park, GuangMin District]

[Shenzhen City]

[China]

Date: Jan. 03, 2023 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 FCC ID: 2AKC6-WB603 US Agent Attestation Statement / Part 2.911(d)(7)

[SHEN ZHEN XIN HUA TIAN TECHNOLOGY CO., LTD] certifies, that as of [Jan. 03, 2023], we have designated FCC US Agent, LLC to accept service of process on our behalf for FCC ID:

2AKC6-WB603.

[SHEN ZHEN XIN HUA TIAN TECHNOLOGY CO., LTD], accepts to maintain an agent of service of process in the United States for no less than one year after either the grantee has permanently terminated all marketing and importation of the applicable equipment within the U.S., or the conclusion of any Commission-related administrative or judicial proceeding involving the equipment, whichever is later. FCC US Agent, LLC, accepts as of the date of the filing of this application, the obligation of being the designated agent for the purpose of accepting service of process on behalf of [SHEN ZHEN XIN HUA TIAN TECHNOLOGY CO., LTD] for FCC ID: 2AKC6-WB603. Designated Agent Information:

Company Name: FCC US Agent, LLC FRN: 0033402884 Address: 3722 Illinois Avenue, Saint Charles, IL, 60174, USA Contact Person: Tim Payne Phone: 708-571-3148 Email: Support@FCCUSAgent.com Sincerely, Company: [SHEN ZHEN XIN HUA TIAN TECHNOLOGY CO., LTD]

FRN: 0026032946 Company Representative: [Carmen Sun]

Tel: 0755-83740554 Email: szxinhuatian@163.com Signature:

Designated Agent: FCC US Agent, LLC Designated Agent Representative: Tim Payne Signature:

SHEN ZHEN XIN HUA TIAN TECHNOLOGY CO., LTD 3Floor, B Buliding, DaHong Industrial Park, GuangMin District, Shenzhen City, China Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Date: Jan. 03, 2023 Subject: Declaration Operating Channel Limitation FCC ID: 2AKC6-WB603 To Whom it may concern, This device is acting as slave/client device under the control of a master. The operating channels in 802.11 b/g/n mode for this device marketed to the US are firmware limited to channel 1 ~ 11 (2412 ~ 2462 MHz). The end-user has no possibility to select any other operating channels. If you have any questions, please feel free to contact me. Thank you. Sincerely, Signatory SHEN ZHEN XIN HUA TIAN TECHNOLOGY CO., LTD Contact person: Carmen Sun Title: General Manager