TP-Link TL-WR1043ND v2

• QCA9558 SoC
• 3×3 2GHz 802.11n wifi
• 64MB RAM
• 8MB flash
• 2 x USB 2.0 ports
• AR8327N 10/100/1000 switch

OpenWRT has quite a bit of information about the hardware platform, including how to use the on-board serial port:

• http://wiki.openwrt.org/toh/tp-link/tl-wr1043nd

The FreeBSD wifi build project has instructions on how to build and flash the unit:

• https://github.com/freebsd/freebsd-wifi-build/wiki/TpLink-TL-WR1043nd-v2