Source : support.lenovo.com
Download Lenovo B4400s Notebook Drivers Windows XP, Vista, 7 / 8 / 8.1 32/64bit
Type
Driver
Operating System
Released
Download
Software and Utilities
Auto Scroll Utility for Notebook
Version: 2.10
Windows 7 32-bit
Windows 7 64-bit
Windows 8 64-bit
Windows 8.1 64-bit
Windows XP 32-bit
1/9/2014
Download
Bluetooth and Modem
Broadcom Bluetooth 4.0
