(Direct Link) Bluetooth + WiFi DRIVER LENOVO T420 ThinkPad ... Direct link ...

LENOVO Thinkpad T Series Network Software

Bluetooth & WiFi driver
Lenovo ThinkPad T420 | Lenovo Think Pad T 420

For Windows 7 (32 bit / 64 bit)
-  Bluetooth <driver>
- WiFi / WLAN (Intel WiMax) <driver>
- WiFi / WLAN (Intel) <driver>
- WiFi / WLAN (ThinkPad) <driver>

Lenovo ThinkPad T420 Specs:

DISPLAY
14-inch anti-glare 900p display (1600×900 resolution, 320 nits brightness)

PROCESSOR
Intel Core i5-2520M dual-core processor (2.5GHz, up to 3.2GHz Turbo Boost, 3MB cache, 35W TDP)

CHIPSET
Intel QM67 chipset

VIDEO GRAPHICS
Nvidia NVS 4200M 1GB dedicated graphics card
Automatically switchable to integrated Intel HD graphics via Nvidia Optimus graphics-switching technology

RAM Memory
4GB DDR3-1333 RAM (1x 4GB; supports up to 8GB – 2x 4GB)

STORAGE
500GB 7200RPM Hitachi hard drive (HTS725050A9A364)

WEBCAM
Integrated 720p HD webcam

OPTICAL DISK
Modular DVD burner

BATTERY
9-cell battery (11.1V, 94Wh, 8.4Ah)

WEIGHT
5.34 lbs. w/ 9-cell battery (4.84 w/ 6-cell)

DIMENSIONS
13.4 x 9.05 x 1.18~1.20 inches.
Starting price: $849