TRENDnet TEW-652BRP V2.xR

Overview
10/100 Ethernet Has WPS Button

The power adapter that came with V2.1R is an Amigo AMS9-0751000FU2 (7.5V, 1.0A). ID/OD/Len measurements are approximate.

Links of Interest
Specs on the OpenWrt forums

Serial Pinouts
[VCC] (TX) (RX) (GND) -> Silkscreened UART text

Pictures
User Images from a V2.1R