brand new and high quality Feature: 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, for Mac and Linux operating systems Atheros AR9281 Wireless Card. Support 802.11B/G/N, single-band (2.4GHz) This module is for most of laptops that have a mini PCI for Express internal slot. Specifications: Model: AR5B91 Material: PCB Size: approx.30x27mm/1.18x1.06in Color: As picture shown Quantity: 1 Pc Note: No retail package. Please allow 0-1mm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you Package Includes: 1 x Wireless Card (other accessories demo in the picture is not included )