RS422 or RS485 or EIA Standard USB2.0 compatible with USB 1.1 Transmission Rate: 300bps to 921Kbps LED indicators for Power, TX, and RX No IRQs, DMA, or memory addresses required No conflicts Automatic transmission data control. Automatic data rate detection Zero delay automatic transmission Automatic handshake protocol supported Built-in static and surge protection up to 600W 15KV ESD protection (Electrostatic Discharge) Supports multiple terminals up to 32 -485 or -422 devices Transmission distance: up to 1200m for -485 or 422 end Working modes: asynchronous point-to-point or point-to-multipoint 2-line half duplex and 4-line full duplex. Application areas: automation systems, distributed control systems, other 485 or 422 serial device wireless networks, LED display equipment, PLC control and management, SCADA, measuring instruments and monitoring systems, management, processing or medication automation, automation, work attendance or personnel management control. Color: silver and black Material: plastic and metal Size: length 1.2 m Package Contents: 1 x USB to 485 or 422 conversion cable 1 x CD driver 1 x 9-pin RS232 female to 5-position terminal 1 x manual