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Synchrotech's high performance ExpressCard 34 to Serial I/O adds a fast serial COM port to mobile computers for attaching fax/modems, bar code scanners, court reporters, data acquisition equipment, MAG stripe readers, GPS receivers, digital cameras or other RS-232 serial devices. The ExpressCard's low power requirement won't burden a laptop's batteries. The ExpressCard Serial Adapter supports serial transmission rate up to 230400 bps.