Asus RT-AC56U Quick Start Guide

Contents
1 Hardware
Specifications
1.1 RT-AC56S♦
•
2 Flashing DD-WRT
Firmware
•
3 Reset•
4 Recovery Mode
Flashing
4.1 OEM
Firmware
Installation
♦
•
5 VLAN Configuration•
6 Overclocking•
Hardware Specifications
FCC ID: MSQ-RTAC56U (or MSQ-RTAC56UA)
CPU: Broadcom BCM4708A0 (800 MHz, 2 cores)•
Flash / RAM: 128 MiB / 256 MiB•
WAN: 1 port, 10/100/1000•
LAN: 4 ports, 10/100/1000•
USB: 2 ports, USB 3.0, USB 2.0•
WI1: Broadcom BCM4352, an+ac
MIMO config: 2x2:21.
Antenna connector: none2.
•
WI2: Broadcom BCM43217, bgn
MIMO config: 2x2:21.
Antenna connector: none2.
•
ETH chip1: Broadcom BCM4708A0•
Switch: Broadcom BCM4708A0•
Power Supply: 19V (DC) @ max 1.75A•
RT-AC56S
This uses the single-core CPU variant (BCM47081A0), has 128 MiB RAM, and different power supply.
There is no evidence that it is supported at all, despite the FCC ID being listed as MSQ-RTAC56UA (CPU in
the Internal Photos is BCM4708A0). Do not try AC56U firmware on an AC56S unless willing to brick.
AsusWRT-Merlin might work on the AC56S with AC56U firmware, but no official support is mentioned.
Flashing DD-WRT Firmware
Brainslayer builds for ARM Broadcom routers have their own directory. Do not use the /broadcom*/
directories. Example: asus_rt-ac56u-firmware.trx tested here but this isn't a recommendation. New build links:
Asus_RT-AC56U
Flashing DD-WRT Firmware 1

Asus RT-AC56U Specifications

General

Ethernet LAN	Yes
Cabling technology	10/100/1000Base-T(X)
Networking standards	IEEE 802.11a, IEEE 802.11ac, IEEE 802.11b, IEEE 802.11e, IEEE 802.11g, IEEE 802.11i, IEEE 802.11n, IEEE 802.3, IEEE 802.3u
Ethernet LAN data rates	10, 100, 1000 Mbit/s
Ethernet LAN interface type	Gigabit Ethernet
Wi-Fi band	Dual-band (2.4 GHz / 5 GHz)
Wi-Fi standards	802.11a, Wi-Fi 5 (802.11ac), 802.11b, 802.11g, Wi-Fi 4 (802.11n)
Top Wi-Fi standard	Wi-Fi 5 (802.11ac)
WLAN data transfer rate (max)	867 Mbit/s
Rack mounting	-
USB ports quantity	2
WLAN data transfer rates supported	1, 2, 5.5, 6, 9, 11, 12, 18, 24, 36, 48, 54, 300, 867 Mbit/s
Ethernet LAN (RJ-45) ports	5
Security algorithms	128-bit WEP, 64-bit WEP, WPA-PSK, WPA2-PSK, WPS
MAC address filtering	No
Product color	Black
LED indicators	LAN, Power, USB, WAN
AC input voltage	110 - 240 V
AC input frequency	50 - 60 Hz
Cables included	LAN (RJ-45)

Weight and Dimensions

Depth	66 mm
Width	147 mm
Height	205 mm
Weight	406 g