661-5989 Left IO-AUDIO BOARD with INSULATOR A1260 for Macbook Pro 15inch 2.4-2.5-.2.6GHz Early 2008 NB-5474W
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: 661-5989
Compatible models: A1260
661-5989 Left IO-AUDIO BOARD with INSULATOR A1260 for Macbook Pro 15inch 2.4-2.5-.2.6GHz Early 2008