Calao Systems USB-A9G20: OpenWrt Compatibility Report

The Calao Systems USB-A9G20 runs OpenWrt 25.12.0 on the at91/sam9x target, and has been supported since 17.01.1. Its No WiFi wireless on the none driver rates fair for open-source driver support (0.50/1.0), installation is rated unknown, and it is no longer sold new.

Drivers: Fair (0.50) No WiFi Install: unknown

Hardware data and retail listings last checked .

Discontinued. This model is no longer sold new, so this page is kept as a reference for people who already own one. See current alternatives.

Where to buy

We have no current retail listing for the Calao Systems USB-A9G20, which is no longer sold new. See current alternatives for devices you can still buy today.

Specifications

SoC Atmel AT91SAM9G20
CPU 1 core @ 400 MHz
RAM 64 MB
Flash 256 MB (NAND)
Ethernet ports 1
USB 2x 2.0
WiFi generation No WiFi
WLAN driver none
OpenWrt target at91 / sam9x
Package architecture arm_arm926ej-s
Current release 25.12.0
Supported since 17.01.1
Install difficulty unknown
Power supply USB
Device type Single-board computer
Estimated throughput 70 Mbps
Availability discontinued

Installing OpenWrt on the USB-A9G20

Installation on this device is rated unknown. Expect serial console access, soldering or another advanced recovery path. Read the device page carefully before you start.

Flashing third-party firmware can brick a router and usually voids the warranty. Always check that the firmware image matches your exact hardware version.

Still sold and well supported

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