Linksys Wireless-N PCI Adapter with Dual-Band (WMP600N) High-speed Wireless-N networking for your desktop PCs Wireless-N technology uses multiple radios per band to create robust signals for greater range and speed, with reduced dead spots Operates in the 2.4 and 5GHz radio bands -- choose the one with least congestion in your area Also connects to Wireless-G, -B, and -A networks