features benefits up to 384 kbps on umts on bothuplink and downlink increase productivity and maintain contact with clients, colleagues and family while on the road multimode umts 2100 mhz broadband access to email, the internet and corporate networks over 3g umts networks in asia, europe and the middle east gsm/gp access 900/1800/1900 mhz backward compatible for maximum coverage on gsm and gp networks worldwide at speeds up to 53.6 kbps quadband internal antenna rugged, durable, no parts to break and maintai coistent throughput most advanced 3g technology coerves battery power optional external antenna further enhance data throughput and maximize network connectivity os compatibility compatible with most laptops with windows＆#8482; 2000, xp and mac os x exteive infrastructure tested highest reliability on all major networks worldwide and compatible with leading laptop models sim compatibility sim adds extra layer of security , easy access to phone book information and streamlines activation vpn compatibility secure access to corporate files and applicatio mobilink＆#8482; modem manager software easy itallation , manages multiple connectivity features two way sms send and receive quick text messages tri-color led identifies network connectivity status specificatio dimeio length: 120.6 mm width: 54 mm depth: 5 mm environmental storage temperature: -20 to +65° c emi shielding umts 2100 mhz band gpgsm 900 mhz gpgsm 1800 mhz gpgsm 1900 mhz "百亿批发零售三频gsm 无线传真机"的品牌为vodafone，型号是001，类别为传真，类型是无线，配置接口为gsm，网络接口是pci，传真速率为53.6kpa，储存量是1gb，质保为一年