ASUS RT-AC42U

Overview

 * • 1300 Mbps - 3SS 5GHz 802.11ac (80MHz chan.),
 * • 400 Mbps - 2SS 2.4GHz 802.11n (40MHz chan.) = 1700 Mbps class


 * Web GUI: http://router.asus.com

Forum threads

 * Reviewed on KoolShare forums (CN) (internal images)
 * Confirms 1.7Gbps 4x4 5GHz link rate

Pictures
Retail Images 

FCC info
"ASUS RT-AC42U REV 1.10" is silkscreened on the board in the FCC photos.

A sticker on the flash chip suggests the Arcadyan WG911DAAC24-ASU model.


 * FCC ID: MSQ-RTHD00 (2017-08-02)
 * Equipment: Wireless-AC1700 Dual Band Gigabit Router
 * Brand Name: ASUS; Model No.: FCC Report


 * ASUS RT-ACRH17 (US) • ASUS RT-AC42U (EU)
 * ASUS RT-AC1700 • (RT-ACRHD00)
 * Default settings are per the FCC Label Sample.


 * CMIIT ID: CMIIT-ID-2017AJ4019 (2017-06-27)

Despite having hardware capable of implementing three radios, this device
 * appears to only use the 2.4GHz radio of the IPQ4019 configured as 2x2.

User Manual says, "wireless-AC speeds up to 1400Mbps on the 5GHz band
 * & 300Mbps on the 2.4GHz band concurrently". This is likely inaccurate.

RF Exposure document shows that :
 * two antennas are used for the 2.4 GHz radio (ANT 0+1) and
 * four antennas are used for the 5 GHz radio (ANT 0+1+2+3).

PSU
Power Adapter: 100-240VAC ~50/60 Hz 12VDC/2A
 * Power Adapter: SGE S24B72-120A200-C4
 * Power Adapter: SFE F24W5-120120SPAU
 * Power Adapter: APD WA-24Q12FU