Small volume, easy installation. No power supply needed, plug and play High quality UK FTDI Chip. Supports RS-485/422 interface,with 600 W lightning-protection; RS-422/485 interface DB PIN connector. Data (TXD) to be automatic flow control, null latency design; Data transfer rate over 1 Mbps Supports automatic hand-shaking protocol; Supports remote wake-up and power supply management; Direct USB power without external power supply Supports Windows7/95/98/2000/XP/NT.IMAG. HU-04 is a kind of USB to RS485/RS422 industrial intelligent converter. It is the best solution for the communication between USB and RS ---485/422. Compared with RS-232 to RS-485/422 converter, USB 485 USB to RS-485/422 converter has many advantages. USB specification revision 1.1 & 2.0 compliant. Auto sense serial signal rate, zero delay automatic transmit Baud rate: 300-115200bps, automatic sense serial signal rate color:As shown Material:plastic Package Contents: 1 x adapter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.