... , GSM Plug and Play solution Work on MID/TABLET voice support HUAWEI E1550 3G Unicom cards USB modem for desktop and laptop ... PCs · Model: Huawei E1550 · Support the following technologies: HSDPA, UMTS, EGDE, GPRS, GSM ... OS X 10.4 andi 10.5 with new additions voice support HUAWEI E1550 3G Unicom cards