This was an option component to WAN to many dell laptops.
All Model numbers for this device
Inspiron: 1120, 1457, 1458, 1558, 1747, Studio 1557, 1121, 1122, 1012, 1749; XPS Notebook: 1645, L701X, L702X, L412Z, L501X, L502X, 13/1340, 1647, L401X; Vostro Notebook: Vostro V13, V130, 3400, 3500, 3550, 3450, 3300, 3350; Latitude: E6400
