This is a usb modem products for GSM and UMTS HSDPA from Prolink. His name Prolink PHS 300. This modem supports GSM GPRS / EGDE at frequency 850 / 900 / 1800 / 1900 MHz,
and also HSDPA and UMTS on the frequency of 2100MHz / 850MHz / 900MHz. Like other usb modem, modem is equipped with a microSD memory slot that can be used up to 8GB.
Prolink PHS 300 Specifications:
Network : GSM, GPRS/EDGE/3G/HSDPA/UMTSBands : Quafband 850 /900 /1800 /1900 MHz
HSDPA/UMTS 2100MHz /850MHz
Chipset : Qualcomm QSC 6270
Type : USB (2.0 standard USB)
Support : SMS, Voice and phonebook
MicroSD slot up to 8 Gb memory
Model : R-UIM, Unlocked, Global roaming
Drivers : Windows XP, Vista and OS mac with auto install