Cisco-Linksys WPC600N Ultra RangePlus Dual-Band Wireless-N PC Card "(Certified Refurbished) This Certified Refurbished product is tested and certified to look and work like new. The refurbishing process includes functionality testing, basic cleaning, inspection, and repackaging. The product ships with all relevant accessories, a minimum 90-day warranty, and may arrive in a generic box. Only select sellers who maintain a high performance bar may offer Certified Refurbished products on Amazon.com High-speed Wireless-N (draft 802.11n) networking for your notebook computer MIMO technology uses multiple radios per band to create robust signals for maximum range and speed, with reduced dead spots Operates in the 2.4 and 5 GHz radio bands--choose the one with least congestion in your area Compatible with Windows XP and Vista