Genuine Dell Wireless Bluetooth Module Board for Latitude: D400, D410, D420, D430, D505, D510, D520, D530, D531, D610, D620, D630/D630c, D631, D800, D810, D820, D830, X1, X300; Inspiron: 300M, 510M, 630M, 640M/E1405, 1410, 1420, 1520, 1521, 1525, 1720, 1721, 6000, 6400/E1505, 8500, 8600, 9100, 9200, 9300, 9400/E1705; Precision: M20, M60, M70, M90, M4300; XPS: M140, M1330, M170, M1210, M1710, M1730, M2010 and Vostro:1310, 1400/1420, 1500, 1700, 500 Compatible Dell Part Numbers: CW725, 0CW725, RJ421, BCM92045MD