I88DX4510-B1AX6000 WiFi6 VDSL2 Bonding Gateway

Date: 2022-07-25 DECLARATION LETTER We, Zyxel Communications Corporation declare that the device does not support channel 12 ~ 13 in 2.4GHz band and any non-US channels in all the operational mode(s) for the following product. FCC ID: I88DX4510-B1 If you should have any question(s) regarding this declaration, please don’t hesitate to contact us. Thank you! Sincerely yours, ----------------------------------- Emma Bao / Manager Zyxel Communications Corporation Tel: 886 3 578-3942 # 88582 E-mail: [email protected]

Confidentiality Request Date: 2022-07-25 Federal Communications Commission Authorization and Evaluation Division FCC ID: I88DX4510-B1 To Whom It May Concern, Long Term Confidentiality Pursuant to Sections 0.457 and 0.459 of the Commission’s Rules, we hereby respectfully request confidential treatment of information accompanying this application as outlined below: Schematics Block Diagram Operational Descriptions Software Operating Description The above materials contain trade secrets and proprietary information not customarily released to the public. The public disclosure of these matters might be harmful to the Applicant and provide unjustified benefits to its competitors. We understand that pursuant to Rule 0.457, disclosure of this Application and all accompanying documentation will not be made before the date of the Grant for this application. Short Term Confidentiality Pursuant to Sections 0.457 and 0.459 of the Commission’s Rules, we hereby respectfully request short-term confidential treatment of information accompanying this application as outlined below until 180 days after the Grant Date of Equipment Authorization in order to ensure sensitive business information remains confidential until the actual marketing of the device: External Photos Internal Photos Test Setup Photos User Manual Sincerely yours, ----------------------------------- Emma Bao / Manager Zyxel Communications Corporation Tel: 886 3 578-3942 # 88582 E-mail: [email protected]

Date: July 25, 2022 FCC ID: I88DX4510-B1 AUTHORIZATION LETTER To whom it may concern: We, the undersigned, hereby authorize Debby Lin / Senior Specialist of Bureau Veritas Consumer Products Services (H.K.) Ltd., Taoyuan Branch (“BV CPS Taoyuan”), to act on its behalf in all matters relating to the Federal Communication Commission (“FCC”) application for equipment authorization in connection with the FCC ID listed above, including signing of all documents relating to these matters. Any and all acts carried out by Debby Lin / Senior Specialist of BV CPS Taoyuan on Zyxel Communications Corporation’s behalf, within the scope of the powers granted herein, shall have the same effect as acts of its own. If you have any questions regarding the authorization, please don’t hesitate to contact us. Sincerely, ---------------------------------------- Emma Bao / Manager Zyxel Communications Corporation Tel: 886 3 578-3942 # 88582 E-mail: [email protected]

Reference No.: BFBE-WTW-P22031258_EXT Page 1/7 CONSTRUCTION PHOTOS OF EUT Reference No.: BFBE-WTW-P22031258_EXT Page 2/7 Reference No.: BFBE-WTW-P22031258_EXT Page 3/7 Reference No.: BFBE-WTW-P22031258_EXT Page 4/7 Reference No.: BFBE-WTW-P22031258_EXT Page 5/7 Adapter Reference No.: BFBE-WTW-P22031258_EXT Page 6/7 Reference No.: BFBE-WTW-P22031258_EXT Page 7/7 Ethernet Cable DSL Cable

FCC ID: I88DX4510-B1 IC: 2468C-DX4510B1 Label: Unit: mm Label Location: Bottom

Reference No.: BFBE-WTW-P22031258_INT Page 1/23 CONSTRUCTION PHOTOS OF EUT Reference No.: BFBE-WTW-P22031258_INT Page 2/23 Reference No.: BFBE-WTW-P22031258_INT Page 3/23 Reference No.: BFBE-WTW-P22031258_INT Page 4/23 Reference No.: BFBE-WTW-P22031258_INT Page 5/23 Reference No.: BFBE-WTW-P22031258_INT Page 6/23 Reference No.: BFBE-WTW-P22031258_INT Page 7/23 Reference No.: BFBE-WTW-P22031258_INT Page 8/23 Reference No.: BFBE-WTW-P22031258_INT Page 9/23 Reference No.: BFBE-WTW-P22031258_INT Page 10/23 Reference No.: BFBE-WTW-P22031258_INT Page 11/23 Reference No.: BFBE-WTW-P22031258_INT Page 12/23 ANT1 Reference No.: BFBE-WTW-P22031258_INT Page 13/23 ANT2 Reference No.: BFBE-WTW-P22031258_INT Page 14/23 Reference No.: BFBE-WTW-P22031258_INT Page 15/23 ANT3 Reference No.: BFBE-WTW-P22031258_INT Page 16/23 ANT4 Reference No.: BFBE-WTW-P22031258_INT Page 17/23 Reference No.: BFBE-WTW-P22031258_INT Page 18/23 ANT5 Reference No.: BFBE-WTW-P22031258_INT Page 19/23 ANT6 Reference No.: BFBE-WTW-P22031258_INT Page 20/23 Reference No.: BFBE-WTW-P22031258_INT Page 21/23 ANT7 Reference No.: BFBE-WTW-P22031258_INT Page 22/23 ANT8 Reference No.: BFBE-WTW-P22031258_INT Page 23/23

Report No.: RFBFBE-WTW-P22031258 Page No. 1 / 83 Report Format Version: 7.1.0 Reference No.: BFBE-WTW-P22031258 TEST REPORT CERTIFICATE OF CONFORMITY Standard: 47 CFR FCC Part 15, Subpart C (Section 15.247) Report No.: RFBFBE-WTW-P22031258 FCC ID: I88DX4510-B1 Model No.: DX4510-B1 Received Date: 2022/4/14 Test Date: 2022/4/14 ~ 2022/6/11 Issued Date: 2022/7/29 Applicant: Zyxel Communications Corporation Address: No.2 Industry East RD. IX, Hsinchu Science Park, Hsinchu 30075, Taiwan Issued By: Bureau Veritas Consumer Products Services (H.K.) Ltd., Taoyuan Branch Hsin Chu Laboratory Lab Address: E-2, No.1, Li Hsin 1st Road, Hsinchu Science Park, Hsinchu City 300, Taiwan Test Location: E-2, No.1, Li Hsin 1st Road, Hsinchu Science Park, Hsinchu City 300, Taiwan FCC Registration / Designation Number: 723255 / TW2022 Approved by: , Date: 2022/7/29 May Chen / Manager This test report consists of 83 pages in total. It may be duplicated completely for legal use with the approval of the applicant. It should not be reproduced except in full, without the written approval of our laboratory. The test results in the report only apply to the tested sample. The test results in this report are traceable to the national or international standards. Prepared by : Cherry Chuo / Specialist This report is governed by, and incorporates by reference, the Conditions of Testing as posted at the date of issuance of this report at http://www.bureauveritas.com/home/about-us/our- business/cps/about-us/terms-conditions/ and is intended for your exclusive use. Any copying or replication of this report to or for any other person or entity, or use of our name or trademark, is permitted only with our prior written permission. This report sets forth our findings solely with respect to the test samples identified herein. The results set forth in this report are not indicative or representative of the quality or characteristics of the lot from which a test sample was taken or any similar or identical product unless specifically and expressly noted. Our report includes all of the tests requested by you and the results thereof based upon the information that you provided to us. Measurement uncertainty is only provided upon request for accredited tests. Statements of conformity are based on simple acceptance criteria without taking measurement uncertainty into account, unless otherwise requested in writing. You have 60 days from date of issuance of this report to notify us of any material error or omission caused by our negligence or if you require measurement uncertainty; provided, however, that such notice shall be in writing and shall specifically address the issue you wish to raise. A failure to raise such issue within the prescribed time shall constitute your unqualified acceptance of the completeness of this report, the tests conducted and the correctness of the report contents. Report No.: RFBFBE-WTW-P22031258 Page No. 2 / 83 Report Format Version: 7.1.0 Reference No.: BFBE-WTW-P22031258 Table of Contents Release Control Record ....................................................................................................................................................... 4 1 Certificate .................................................................................................................................................................... 5 2 Summary of Test Results .......................................................................................................................................... 6 2.1 Measurement Uncertainty ........................................................................................................................................ 6 2.2 Supplementary Information ...................................................................................................................................... 6 3 General Information ................................................................................................................................................... 7 3.1 General Description .................................................................................................................................................. 7 3.2 Antenna Description of EUT ..................................................................................................................................... 8 3.3 Channel List ............................................................................................................................................................ 10 3.4 Power Setting ......................................................................................................................................................... 11 3.5 Test Mode Applicability and Tested Channel Detail ................................................................................................ 12 3.6 Duty Cycle of Test Signal ........................................................................................................................................ 13 3.7 Test Program Used and Operation Descriptions .................................................................................................... 14 3.8 Connection Diagram of EUT and Peripheral Devices ............................................................................................ 14 3.9 Configuration of Peripheral Devices and Cable Connections ................................................................................ 15 4 Test Instruments ...................................................................................................................................................... 16 4.1 RF Output Power .................................................................................................................................................... 16 4.2 Power Spectral Density ............................................................................................................…

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Page 1 Multi-Antenna Systems Directional Gain Measurement Report Applicant: Zyxel Communications Corporation. Address: No.2 Industry East RD. IX, Hsinchu Science Park, Hsinchu 30075, Taiwan FCC ID: I88DX4510-B1 Test Model: DX4510-B1 Received Date: 2022/05/26 Test Date: 2022/05/27~28 Issued Date: 2022/06/02 Issued By: Bureau Veritas Consumer Products Services (H.K.) Ltd., Taoyuan Branch Type of Chamber: Fully Anechoic Chamber Lab Address: No. 47-2, 14th Ling, Chia Pau Vil., Lin Kou Dist., New Taipei City, Taiwan Test Location: No. 19, Hwa Ya 2nd Rd, Wen Hwa Vil, Kwei Shan Dist., Taoyuan City 33383, Taiwan Page 2 Multi-Antenna Systems Directional Gain measurement Table of Contents 1 EUT Antenna System Description ........................................................................................................ 3 1.1 Antenna Information.............................................................................................................................. 3 1.2 EUT Operation mode ............................................................................................................................ 5 2 Conducted Power Measurement .......................................................................................................... 6 2.1 Test Setup .............................................................................................................................................. 6 2.2 Test Instruments .................................................................................................................................... 6 2.3 Test Procedure ...................................................................................................................................... 6 2.4 Test Results of RF Conducted Power (2.4GHz and 5GHz bands) ..................................................... 6 3 3D Antenna Pattern Measurement and Directional gain calculation (Measurement Method and Measurement Environment) .............................................................................................................................. 7 3.1 Test Location ......................................................................................................................................... 7 3.2 Test Procedure ...................................................................................................................................... 7 3.3 Test Setup Diagram @ Fully Anechoic Chamber (Dimension: 12m(L)*7m(W)*7m(H)) ........................ 7 3.4 Test Setup Diagram for EUT ................................................................................................................. 8 3.5 Test Instruments .................................................................................................................................... 9 3.6 Test Procedure .................................................................................................................................... 10 3.7 Test Results (Measurement Quantity) of EIRP Measurement & Directional Gain Calculation ............ 11 3.8 3D EIRP Pattern and 3-dB Beamwidth Test Plots .............................................................................. 12 Appendix - Information of the Testing Laboratories ......................................................................................... 22 Page 3 1 EUT Antenna System Description 1.1 Antenna Information Antenna No. RF Chain No. Brand Model Antenna Net Gain(dBi) Frequency range (GHz) Antenna Type Connector Type *Cable Length (mm) ANT1 2.4G_Chain 3 WHAYU 56-001- 000047Z 2.7 2.4~2.4835 Dipole ipex(MHF) 313 ANT2 2.4G_Chain 2 WHAYU 56-001- 000048Z 2.31 2.4~2.4835 Dipole ipex(MHF) 258 ANT3 2.4G_Chain 1 WHAYU 56-001- 000049Z 2.57 2.4~2.4835 Dipole ipex(MHF) 263 ANT4 2.4G_Chain 0 WHAYU 56-001- 000050Z 2.53 2.4~2.4835 Dipole ipex(MHF) 145 ANT5 5G_Chain 3 WHAYU 56-001- 000051Z 2.6 2.92 3.31 3.16 5.15~5.25 5.25~5.35 5.47~5.725 5.725~5.85 Dipole ipex(MHF) 59 ANT6 5G_Chain 2 WHAYU 56-001- 000052Z 2.99 3.22 3.13 2.18 5.15~5.25 5.25~5.35 5.47~5.725 5.725~5.85 Dipole ipex(MHF) 40 ANT7 5G_Chain 1 WHAYU 56-001- 000053Z 3.48 3.09 3.79 2.46 5.15~5.25 5.25~5.35 5.47~5.725 5.725~5.85 Dipole ipex(MHF) 45 ANT8 5G_Chain 0 WHAYU 56-001- 000054Z 0.63 2.62 2.61 3.73 5.15~5.25 5.25~5.35 5.47~5.725 5.725~5.85 Dipole ipex(MHF) 80 Page 4 1.2 Antenna Location Page 5 1.3 EUT Operation mode Band Modulation Mode CDD mode Beamforming mode 2.4GHz 802.11b Nss1 Not Support 802.11g Nss1 Not Support 802.11n(HT20) Nss1 / Nss2 / Nss3 / Nss4 Nss1 / Nss2 / Nss3 / Nss4 802.11n(HT40) Nss1 / Nss2 / Nss3 / Nss4 Nss1 / Nss2 / Nss3 / Nss4 802.11n(VHT20) Nss1 / Nss2 / Nss3 / Nss4 Nss1 / Nss2 / Nss3 / Nss4 802.11n(VHT40) Nss1 / Nss2 / Nss3 / Nss4 Nss1 / Nss2 / Nss3 / Nss4 802.11ax(HE20) Nss1 / Nss2 / Nss3 / Nss4 Nss1(Note) / Nss2 / Nss3 / Nss4 802.11ax(HE40) Nss1 / Nss2 / Nss3 / Nss4 Nss1 / Nss2 / Nss3 / Nss4 5GHz 802.11a Nss1 Not Support 802.11n(HT20) Nss1 / Nss2 / Nss3 / Nss4 Nss1 / Nss2 / Nss3 / Nss4 802.11n(HT40) Nss1 / Nss2 / Nss3 / Nss4 Nss1 / Nss2 / Nss3 / Nss4 802.11ac(VHT20) Nss1 / Nss2 / Nss3 / Nss4 Nss1 / Nss2 / Nss3 / Nss4 802.11ac(VHT40) Nss1 / Nss2 / Nss3 / Nss4 Nss1 / Nss2 / Nss3 / Nss4 802.11ac(VHT80) Nss1 / Nss2 / Nss3 / Nss4 Nss1 / Nss2 / Nss3 / Nss4 802.11ac(VHT160) Nss1 / Nss2 / Nss3 / Nss4 Nss1 / Nss2 / Nss3 / Nss4 802.11ax(HE20) Nss1 / Nss2 / Nss3 / Nss4 Nss1(Note) / Nss2 / Nss3 / Nss4 802.11ax(HE40) Nss1 / Nss2 / Nss3 / Nss4 Nss1 / Nss2 / Nss3 / Nss4 802.11ax(HE80) Nss1 / Nss2 / Nss3 / Nss4 Nss1 / Nss2 / Nss3 / Nss4 802.11ax(HE160) Nss1 / Nss2 / Nss3 / Nss4 Nss1 / Nss2 / Nss3 / Nss4 Note: The 802.11ax (HE20) of Nss 1 of beamforming mode for both 2.4 GHz and 5 GHz bands is the worst case for final testing. Band Modulation Mode Ant 1 Ant 2 Ant 3 Ant 4 2.4GHz 802.11b TX/RX TX/RX TX/RX TX/RX 802.11g TX/RX TX/RX TX/RX TX/RX 802.11n(HT20) TX/RX TX/RX TX/RX TX/RX 802.11n(HT40) TX/RX TX/RX TX/RX TX/RX 802.11n(VHT20) TX/RX TX/RX TX/RX TX/RX 802.11n(VHT40) TX/RX T…

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Reference No.: BFBE-WTW-P22031258 Page 1/5 CONSTRUCTION PHOTOS OF EUT AC Power Conducted Emissions Reference No.: BFBE-WTW-P22031258 Page 2/5 Unwanted Emissions below 1 GHz Reference No.: BFBE-WTW-P22031258 Page 3/5 Reference No.: BFBE-WTW-P22031258 Page 4/5 Unwanted Emissions above 1 GHz Reference No.: BFBE-WTW-P22031258 Page 5/5