Specifications

USB HUB to 4 ports RS232 converter
1.Plug and play compliant, hot swappable
2.Add 1 to 4 serial ports

USB HUB to 4 ports RS232 converter

A quick and easy way to expand your PC's port count and to adapt serial devices to your USB PC. Edgeport USB-to-Serial converters are intelligent expansion units that connect to a PC, thin client or server via a USB port. They provide one, two, four, eight or sixteen serial ports, as well as parallel and USB ports on some models. Compatible with most Windows operating systems. No IRQ, I/O address, DMA or memory address requirements. Serial port models require no external power. Models with USB output ports use an included power supply.
Features
1.Plug and play compliant, hot swappable
2.Add 1 to 4 serial ports
3.Multi-interface RS-232 model
4.USB 2.0, USB 1.0 and 1.1 compliant 
5.USB port powered no external power needed on USB to serial models, or 5VDC power supply. 
Communication

Standard	Accord USB1.1 or 2.0, EIA RS232 standard
USB signal	VCC, DATA+, DATA-, GND, FG
RS-232 signal	RX, TX, RTS, CTS, DTR, DSR, DCD, RI, GND
Working format	Asynchronism, point to point or multi-point
Baud rate	300-115200bps, automatic sense signal rate
Transmission	RS232 side 15M, USB side less than 5M
Protection	600W sugre protection, 15KV static electricity protection
Connector	USB side type A interface female, RS-232 side DB-9 male

Environment

Working temperature	-20 to 60
Storage temperature	-25 to 85
Humidity	Relative humidity 5% to 95%

Power

Input powered	Powered from USB or 5VDC external powered
Consumption	Static consumption less than 80mA, dynamic average consumption less than 150mA

Dimension

L*W*H	245mm*90mm*38mm
Shell	Iron
Color	White
Weight	250g