TP-LINK TL-WR841ND v3.0

Overview
The power adapter included with the device is a Leader Electronics MU12-2120100-C5 (12V, 1A).

Links of Interest
Pictures

TP-LINK TL-WR841N - DD-WRT forums TP-Link TL-WR841ND Ver 3.0 - DD-WRT forums

On the OpenWrt wiki HOWTO: Install Openwrt on TP-Link TL-WR841ND VERSION 3 - OpenWrt forums