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TROY's new 2Port interface significantly increases the capabilities of any Hewlett-Packard printer that uses the Enhanced I/O (EIO) expansion slot, including the LaserJet 2100, 2200, 4000, 4100, 5000, 8000, 8100, and Color LaserJet 4500, Color LaserJet 8500, and the new LaserJet 2200. It provides capabilities not available on most standard HP printers, including a Universal Serial Bus (USB) port and an RS-232 serial port. The 2Port provides a high-performance RS-232-C serial port. This port is useful for applications that require longer distances than are possible with a parallel port, and for connection to serial devices like terminal servers. It supports speeds of 300 to 115.2 Kbps, ODD, EVEN, and NO parity, and 7/8 bit characters. Both hardware and XON/XOFF flow control are supported. Modem controls include DTR, DSR, RTS, and CTS. The serial port can be configured either from the printer LCD front panel (if present) or via switches.