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Description:US-122 2-port USB to RS232 Conveter US-122 enables users to expend 2 external Serial ports. So that they are able to connect RS-232 devices onto their computers. The high speed serial port with the 128 byte FIFO allow high speed communication, even in heavy loaded systems. Unique features reduce the system load. The serial port also allows unusual speed settings like 500.000bps. Specifications: Input:1 x USB 2.0 Port Ports:2 x RS232 port Speed: Up to 921.6kbps RS232 signals: TxD, RxD, RTS, CTS, DTR, DSR, DCD, GND Power: USB bus powered Operation System: Windows 98, ME,2000, XP,2003 Server; Linux (Kernel 2.4 and up built-in) Accessories: USB cable 0,9m x 1