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This document provides specifications for a GPRS modem dongle manufactured in China. The dongle connects to computers via USB and supports data transmission rates up to 171.2Kbps as well as voice, SMS. It is compatible with Windows operating systems, runs on USB power, and measures 93mm x 32mm x 11mm. The dongle works with GSM SIM cards without a PIN and operates on GSM frequency bands of 900/1800/1900MHz.
