For a list of all currently documented Atheros chipsets with specifications, see Atheros.
FCC approval date: 19 August 2012
Country of manuf.: China
Power: 9 VDC, 0.6 A
Connector type: barrel
CPU1: Atheros AR9331FLA1: ? MiB
Model?)RAM1: 32 MiB
Expansion IFs: none specified
WI1 chip1: Atheros AR9331
WI1 802dot11 protocols: bgn
WI1 MIMO config: 1x1:1
WI1 antenna connector: RP-SMA
Third party firmware supported: OpenWrt (unofficially)
802dot11 OUI: none specified
"2053500038" and "Rev:1.0" is silkscreened on the board in the FCC photos.
OpenWrt Chaos Calmer 15.05.1 can run on this device; flashable to device and fully operational, after preparation: modified header of OpenWrt ar71xx for TL-WR740Nv4 firmware .bin file, from 07400004 to 07300002.