... QUAD-BAND 2.800/900/1800/1900MHZ 3.WITH PCI CARD 4.ONE YEAR WARRANTY 5.LIFELONG MAINTENANCE,BEST PRICE ... ensure stable operation;2,switch independence, support for the size of SIM card;3,ports support hot-swapping;4,a separate module ... only one and two data lines, very simple;6,the size of a small, elegant, accounting for a smaller space ... :30:28 multi MODEM POOL 8ports hot selling Mini card small size