Cisco-Linksys Wireless-N PCI Adapter with Dual-Band (WMP600N) for $50.68

The Ultra RangePlus Wireless-N PCI Adapter with Dual-Band adds wireless connectivity to your desktop computer. Install it into an available slot in your computer, and enjoy great high-speed wireless network access without running wires. The Wireless-N PCI Adapter uses the very latest wireless networking technology, Wireless-N (draft 802.11n). By overlaying the signals of multiple radios for each band, Wireless-N's "Multiple In, Multiple Out" (MIMO) technology is designed to multiply the effective data rate.