2nd hand out of a dead ASUS laptop. Atheros AR9281 Single-chip 2.4 GHz draft 802.11n WLAN PCI-Express Wireless Card

The Atheros AR9281, the single-chip, single-band (2.4GHz) solution for PCIe in XSPAN's third generation of products.  Half-Mini Card form factor that is 30% smaller than the nearest competitive 11n.  Single-band, 1x2 MIMO configuration which features downshift to 1x1 MIMO with Power Save.  New, compact half- and full Mini Card form factors Compliant with PCI-Express Mini Card 1.1 standard Interoperability with 802.11b, 802.11g and draft 802.11n products Driver support for Windows XP, Vista, Mac and Linux operating systems

http://www.atheros.com/pt/bulletins/AR9281Bulletin.pdf

Please visit http://www.atheros.cz/ download drivers.

Atheros AR9281 Wireless Card. Support 802.11B/G/N, single-band (2.4GHz)

This module is compatible with most of  laptops that have a mini PCI Express internal slot. Not for IBM Lenovo ThinkPad and HP.