HUAWEI E5756 Mobile WiFi is a high-speed packet access mobile hotspot. The E5756 is fast, reliable, and easy to operate. Thus, mobile users can experience many new features and services with the E5756. SPECIFICATIONS - Frequency band: HSPA+/HSUPA/HSDPA/UMTS 2100/850/1900 MHz - DC-HSPA+ Speed: DL 21 Mbps/UL 5.76 Mbps - 5 Wi-Fi connections at same time - Wi-Fi: 802.11b/g/n - USB 2.0 high speed - Built-in DHCP Server, DNS RELAY and NAT - Equalizer and receive diversity - Data and SMS Service - Windows XP, Windows Vista, Windows 7, MAC OS X 10.5, 10.6 and 10.7