Buffalo WZR-HP-G302H

WZR-HP-G300NH2 on the OpenWrt wiki (w/ boot log for the G302H)
 * The WZR-HP-G302H appears to be a Japanese variant of the G300NH2
 * "WZR-HP-G302HV2" and "21514W302HV21A2 Rev:A2" is silkscreened on the board.
 * AR9283-AL1A Wi-Fi chip

On the OpenWrt forums
 * appears to be shipping with U-Boot 1.08, serial console disabled

The default IP is 192.168.11.1 w/ router mode on or 192.168.11.100 w/ router mode off. The default SSID appears to be the MAC address (upper case hex letters, no delimiters between octets).