820-2055 922-7911 Sound-DC-In Board Left I-O Board - Core2Duo A1151 15inch 2.16-2.33GHz Macbook Pro NB-4436W
This is the board for the 15-inch MacBook Pro which has the MagSafe connector, Sound ports, USB, and the ExpressCard connector.
Apple part number: 922-7911, 820-2055-A
Compatible models: PreUnibody-A1151, PreUnibody-A1151, MA609LL, MA610LL, 820-2055-A
Compatible Mac info. : 2.16GHz Core 2 Duo 15-inch 2.33GHz Core 2 Duo 15-inch Macbook Pro 820-2055-A
922-7911 Sound-DC-In Board Left I-O Board - Core2Duo A1151 15inch 2.16-2.33GHz Macbook Pro 8202055A