Intel PRO/Wireless 3945 ABG Mini PCIe Wireless Card 802.11a/b/g 2.4 GHz 54 Mbps WM3945ABG MOW2 Networking Connection Note: this wireless card could not work on IBM/Lenovo/Thinkpad and HP version laptop Frequency Band/Bandwidth 2.4 GHz IEEE 802.11b/g ISM Band Transmission Speed Details 54 Mbps Maximum IEEE 802.11g Transmission Speed Details 11 Mbps Maximum IEEE 802.11b Operating Systems: Microsoft Windows 2000 Microsoft Windows XP Home Edition Microsoft Windows XP Professional Microsoft Windows XP Tablet PC Edition