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Trendnet TEW-634GRU

300Mbps Wireless N Gigabit Router with USB Port

Supported Versions

Version/Model Launch Date S/N OpenWrt Version Supported Model Specific Notes
v1.0R 2009? - - -

NOTE: Anything not included in model specific notes, or where a short comment couldn't be included on the notes.

Hardware Highlights

CPU Ram Flash Network USB Serial JTag
Atheros AR9102 32MiB 4MiB 4 x 1 Yes Yes Yes


Flash Layout

Please check out the article flash.layout. It contains an example and a couple of explanations.

dev: size erasesize name mtd0: 00020000 00010000 “u-boot” mtd1: 00010000 00010000 “Config” mtd2: 00100000 00010000 “vmlinux” mtd3: 002b0000 00010000 “rootfs” mtd4: 00020000 00010000 “ART”

OEM easy installation

OEM installation using the TFTP method

Upgrading OpenWrt



NOTE: some of the following information may not be entirely correct.

Architecture: MIPS
Vendor: Atheros
Bootloader: U-Boot
System-On-Chip: AR9132 (MIPS 24K V7.4)
CPU/Speed 24K V7.4 400 Mhz
Flash size: 4 MiB
RAM: 32 MiB
Wireless: Atheros AR5416 2.4ghz 802.11bgn
Ethernet: RealTek RTL8366RB Gigabit w/ vlan support
USB: Yes 1 x 2.0
Serial: Yes


Model Number


Photo of front of the casing


Photo of back of the casing

Opening the case

Note: This will void your warranty!

To remove the cover, remove the four screws on the bottom. The front ones are under the rubber feet if you have already put them on.

Main PCB

Photo of PCB


port.serial general information about the serial port, serial port cable, etc.

How to connect to the Serial Port of this specific device:

There are four contacts in a row right next to the JTAG port. I have it hooked up and working and will add a picture later.

3.3V serial port voltage

COM port settings: Speed:115200, Data bits:8, Stop bits:1, Parity:none, Flow control:none

Photo of PCB with markings


port.jtag general information about the JTAG port, JTAG cable, etc.

How to connect to the JTAG Port of this specific device:

There is a 14 pin JTAG port. I haven't tried using it. See the serial port section for a picture as I don't know what the pins are for.


Bootloader Mods

  1. you could read about bootloader in general

Hardware mods



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toh/trendnet/tew634gru.txt · Last modified: 2018/03/31 23:22 by bobafetthotmail