For a list of all currently documented Marvell chipsets with specifications, see Marvell.
(presumably) OEM Gemtek (perhaps model WRTM-177GN / WRTM-177GN_V01)
On the Lemmke list as being a 500MHz Marvell based AP with 8MB Flash and 32MB RAM.
Per the WNR854T on the OpenWrt wiki, the Netgear WNR854T is identical (or near identical) to this device.
Per the manual, the default SSID is default.