For a list of all currently documented Atheros chipsets with specifications, see Atheros.
FCC approval date: 05 July 2005
CPU1: Atheros AR2316AFLA1: 4 MiB
Model?)RAM1: 16 MiB
Expansion IFs: none specified
WI1 chip1: Atheros AR2316A
WI1 802dot11 protocols: bg
WI1 antenna connector: U.FL, RP-SMA
ETH chip1: Atheros AR2316A
Switch: IC+ IP175C
LAN speed: 10/100
LAN ports: 4
WAN speed: 10/100
WAN ports: 1
Flags: high power, amplifier
"BWIFI", "PCB-WIFI-AP1-1.0", "(C) 2005" appears to be silkscreened on the board in the FCC photos.
On the DD-WRT wiki
Per the DD-WRT Supported Devices table, this router has 4MB Flash and 16MB RAM.
Bountiful BWRG1000 on TechInfoDepot
Default credentials are per the manual.
Presumed 00:14:AC (Bountiful WiFi) OUI based on the FCC label.