Linksys WMP300N Wireless-N PCI Network Adapter. This card does not include the antenna or any other accessories. The Linksys Wireless-N PCI Adapter installs in most desktop and tower PCs, and lets you put your computer almost anywhere in the building without the cost and hassle of running network cables. Now you don't have to drill holes in your walls and climb through the attic or cellar to get connected to the network.
The Wireless-N PCI Adapter uses the very latest wireless networking technology, Wireless-N (draft 802.11n). By overlaying the signals of multiple radios, Wireless-N's "Multiple In, Multiple Out" (MIMO) technology multiplies the effective data rate. Unlike ordinary wireless networking technologies that are confused by signal reflections, MIMO actually uses these reflections to increase the range and reduce "dead spots" in the wireless coverage area. The robust signal travels farther, maintaining wireless connections up to 4 times farther than standard Wireless-G.
With Wireless-N, the farther away you are, the more speed advantage you get. It works great with standard Wireless-G and -B equipment, but when both ends of the wireless link are Wireless-N, the throughput can be increased even more by using twice as much radio band, yielding speeds up to 12 times as fast as standard Wireless-G.

Features and Specifications:

Features:
Increases Range up to 4X, and Speed up to 12X, over Wireless-G (802.11g) Standard
Performance Investment Protection: Compatibility with Wireless-B (802.11b) and Wireless-G (802.11g) Standards
Easy to use Setup Wizard
Plug-and-Play Operation Provides Easy Setup
Compatible with Microsoft Windows 2000 and XP
Brand: LINKSYS
Model: WMP300N-RM
Standards: IEEE 802.11b/g, IEEE 802.11n Draft
Security: 128-bit WEP, WPA and WPA2 Encryption Security WPA/WPA2 WPA2
Interface: PCI
Channels: 11 Channels (US, Canada) 13 Channels (Europe)
LEDs: ACT
Antenna: External Antenna
Dimensions: 5.2" x 4.8" x 0.9"
Weight: 2.2 oz.
Temperature: 0°C - 50°C (32°F - 122°F)
Humidity: 10% to 80% Non-Condensing
Windows Vista: Certified for Windows Vista
Modulation:
802.11b: CCK, QPSK, BPSK
802.11g: OFDM
Wireless-N: BPSK, QPSK, 16-QAM, 64-QAM
Transmitted Power:
802.11g: 12±1dBm (Typical)
Wireless-N: 10±1dBm (Typical)
System Requirements:600 MHz or Faster PC
256 MB of RAM Memory
CD-ROM Drive
Available PCI Slot for Wireless-N PCI Adapter
Windows 2000 or XP with Service Pack 1 (or later)