SIERRA WIRELESS AC595 SPRINT PC PCMCIA AIR CARD Surf the Internet, Check Emails Or Access Corporate Networks On The Go! Data Download Speeds Burst to 3.1 Mbps! Upload Bursts to 1.8 Mpbs! Supports Windows XP, 2000 and Vista OS Supports Mac OS X 10.4 With Free SierraWireless.com Software Download Of Watcher Lite Software PC Card Type II, 32-bit Cardbus