Detailed Product Description ZTE MG880+, 880+, USB CDMA ModemCDMA 800Mhz 2000 1x;Maximum Downlink Speed: 230.4 kbps;Maximum Uplink Speed: 230.4 kbps;Build in 2Gb flash memory;Operating System: Windows 2000/XP/Vista/Mac Apple;Function: SMS,Data, Support for Multiple APN,SMS(send and receive),Dial-up networkingDimension: 87*48*34mm.