Ath9k
ath9k (Multiband Atheros 9000 series Driver for Wifi) is Linux driver for 802.11a/b/g/n universal NIC cards - Cardbus, PCI-E, or miniPCI-E - using Atheros 9000 series chip sets.
Atheros 9000 series
The following list of adapters sold by Lenovo use the Atheros 5000 series chips:
Status
This driver is part of the Linux kernel since 2.6.27.