Black Box IC832A USB 2.0 to RS485 2-Wire Converter - Terminal Block, 1-Port

Serial does not travel far on its own, and the IC832A is Black Box's answer: Terminal Block, 1-Port. Interface: RS-232 or RS-485. Connectors are (1) USB Type-B (Female). Powered from the USB interface. Includes 3-ft. (0.9-m) USB cable.

Power: 5 VDC from USB interface. It measures 0.6-in. H x 2.3-in. W x 1.3-in. D (1.6 x 5.8 x 3.2-cm) and weighs < 0.5-lb. (< 0.23-kg).