Model: UT-890A Name: USB to 485/422 Converter Complies with USB 1.1, 1.0, 2.0 and EIA-485, EIA-422 standards USB Signals: VCC, DATA+, DATA-, GND, FG 485 Signal: T/R+, T/R-, GND 422 Signals: T/R+, T/R-, RXD+, RXD-, GND Working Mode: Asynchronous, point-to-point or multipoint, 2-wire half-duplex, 4-wire full-duplex Direction Control: Automatic data flow direction control technology for automatic identification and transmission direction management Baud Rate: 300–921.6 kbps, supports automatic serial port signal rate detection Load Capacity: Supports point-to-multipoint connection; each converter allows up to 32 RS-422 or RS-485 interface devices Transmission Distance: Up to 1200 meters at 485/422 end (at 9600 bps), up to 5 meters at USB end Interface Protection: Surge protection, ±15 kV electrostatic discharge protection Connector Type: USB Type-A male and DB9 male interface Signal Indicators: 2 signal LEDs (TX, RXD), 1 power indicator Transmission Medium: Twisted pair or shielded cable Dimensions: 155 mm x 36 mm x 16 mm (L x W x H) Operating Environment: -40°C to 85°C, relative humidity 5% to 95% (non-condensing) Supported Operating Systems: Windows 8, Windows 10, Windows 2000, 2003, 2008, 2012, XP, Vista, 7, 8, 8.1, 10, CE, Linux Color: As shown in picture Material: Plastic Package Contents: 1 x Serial Cable Note: The package includes only the items listed above. Other accessories are not included. Note: Lighting effects and monitor settings may cause slight color variations between the image and actual product. Measurement tolerance: ±1–3 cm.