HuaWei EM820U 3G WCDMA GSM WWAN Mini PCI-E Card HSPA+ 21Mb (Unlocked) Network type: WCDMA / AWS/GSM / EDGE HSUPA: 21Mbps Uplink 5.76Mbps downlin GSM/GPRS/EDGE 850/900/1800/1900 MHzHSPA+/HSUPA/HSDPA/UMTS 850/900/1900/2100 MHz Operating System: Windows 2000/Windows XP / Windows Vista / Windows 7/Linux Note: This Wireless Card could not work on IBM/Lenovo/Thinkpad and HP Version Laptop