HSUPA USB modemIt is easy to roam globally on tri-band umts and quad band GSM/ GPRS/ EDGE network, Downlink up to 7.2 Mbps on HSUPA & UMTS capable networks, and uplink up to 5.76Mbps, The added advantages with this products are the 8G MicroSD memory expansion capability, The auto install driver which requires no CD. Detailed Description Worldwide roaming and global connectivity with one modem. Chip set: MSM 6290 Supports HSDPA/ UMTS on 2100 MHZ or 850/ 1900/ 2100MHZ GSM / GPRS/ EDGE on 850/ 900/ 1800/ 1900MHZ Downlink up to 7.2Mbps on HSDPA and UMTS capable networks. uplink up to 5.76Mbps. EDGE data up to 236.8Kbps. Built-in Micro SD memory up to 8G Automatically install driver, no CD required Supports Data / SMS functions. Supports Microsoft Windows 2000/ XP/ Vista/ Mac OS Specifications: Interface: USB High performance internal antenna SIM card slot and built-in micro SD memory expansion slot LED indicator Dimensions: 80* 26* 10mm Weight: 26g