Dell Laptop Qualcomm WLAN WiFi Mini PCIe Card 802.11b/gn "Atheros".

Taken from working DELL PCs and fully tested. 

Atheros QCWB335 WIFI Wireless+Bluetooth BT 4.0 Card

Description: Second-hand item

Brand: Atheros

Model: QCWB335

Interface: Mini PCI-E half height

Bluetooth: BT 4.0

Compatible with: for HP, Dell and other laptops

Package includes:

1 x Wifi Card

2 x Screws