USB Bus
Compliance	USB 1.0/1.1 compliant, USB 2.0 compatible
Speed	12 Mbps, full-speed USB
FIFO	128 byte transmit FIFO  384 receive FIFO
Serial Interface
Port Type	RS-232/RS-422/RS-485 selectable by software
Number of Ports	4
Connectors	Four DB9 male
Serial Line Protection
ESD Protection	10KV
Serial Port Speed
Baudrate	300 bps to 921.6K bps RS-232  300 bps to 3M bps RS-422/485
Serial Communication Parameters
Data Bits	5, 6, 7, 8
Stop Bits	1, 1.5, 2
Parity	None, Even, Odd, Space, Mark
Flow Control	RTS/CTS, XON/XOFF
Serial Signals
RS-232	TxD, RxD, RTS, CTS, DTR, DSR, DCD, GND, RI
RS-422	TxD-(A), TxD+(B), RxD+(B), RxD-(A), GND, RTS-(A), RTS+(B), CTS+(B), CTS-(A)
RS-485-4 wire	TxD-(A), TxD+(B), RxD+(B), RxD-(A), GND
RS-485-2 wire	Data-(A), Data+(B), GND
Available Modes
RS-232	full duplex
RS-422	4-wire with handshaking, full duplex
RS-485	4-wire full duplex, by RTS  4-wire full duplex, auto  2-wire half duplex with echo, by RTS  2-wire half duplex with echo, auto  2-wire half duplex without echo, by RTS  2-wire half duplex without echo, auto
Driver Support
OS	Windows 7, Vista, 2003, XP (WHQL certified) and 2000  Linux Kernel 2.4 and up built-in support
Power Supply
Input	Self-powered  Power adapter of 5VDC, 2A
Mechanical
Chassis	SECC metal chassis with DIN rail bracket
Environmental
Operating Temperature	0 to 55 °C (32 to 131 °F)
Operating Humidity	5 to 95% RH
Storage Temperature	-20 to 75 °C (-4 to 167 °F)
Safety Approvals	EN55022 Class B, EN55024, EN61000-3-2, EN61000-3  IEC 61000-4-2, IEC 61000-4-3, IEC 61000-4-4, IEC 61000-4-5,  IEC 61000-4-6, IEC 61000-4-8, IEC 61000-4-11.  CISPR PUB. 22 and FCC Part 15 Class B.