Brand New and High Quality Feature: Atheros AR9281, the single-chip, single-band (2.4 GHz) solution for PCIe in XSPAN's third generation of products. Half-Mini Card form factor that is 30% smaller than the nearest competing 11n. Single-band, 1x2 MIMO configuration that downshifts 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. Supports 802.11B/G/N, single-band (2.4 GHz). This module is for most laptops that have a mini PCI for Express internal slot. Specifications: Model: AR5B91 Material: PCB Size: approx. 30x27mm/1.18x1.06in Color: As the picture shows Quantity: 1 Pc Note: No retail package. Please allow 0-1mm error due to manual measurement. Make sure you don't mind before bidding. 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 demos in the picture are not included!)