On plugging these USB 4,to 32 port industrial serial adapters  they  are automatically detected and installed. There are no IRQ & COM port conflicts, since the port doesn’t require any additional IRQ, DMA, memory as resources on the system. The RS-232 or RS-422/485 port functions as native Windows COM port, and it is compatible with Windows serial communication applications. Each port is individually configurable. The adapters are designed with external switches to set RS-232, RS-422 or RS-485 ports and different operation modes conveniently.

The isolation and surge protection models (USB2-4COMi-SI-TB, USB2-8COMi-SI-TB) support 3000V DC optical isolation, 15kV ESD protection and 600W surge protection for all serial signals.

There are 3 variations: DB9,  Terminal Block and Rack Mount. With isolation as an option



Terminal Block Connections

DB9 Connectors

Rack Mount



Compliance USB 2.0 High Speed, USB 1.1 compliant
Speed 480Mbps, hi-speed USB
Connector USB type B
FIFO 2k bytes transmit and receive
Operating Systems Windows 2000 up to Windows 10
Windows Server 2000 up to 2018
Linux kernel 2.6+
Mac OS X support available
Installation The driver is already installed (Linux), or automatically downloading and installing device drivers after Device connection (Windows).
Serial Interface
Interface RS-232/422/485
Number of Ports 4/8/16/32
Connector DB9 or 5-pin terminal block
Max. Speed RS-232:up to 1Mbps RS-422/485:up to 12Mbps
RS-232 Signals TxD, RxD, GND
RS-422 Signals TxD-, TxD+, RxD+, RxD-
RS-485 Signals (4 wire) TxD-, TxD+, RxD+, RxD-, GND
RS-485 Signals (2 wire) Data-, Data+, GND
Protection 15kV ESD protection 600W surge protection
3000V DC optical isolation
Serial Communication Parameters
Data Bits 7, 8
Parity None, Even, Odd, Mark, Space
Stop Bit 1, 2
Flow Control Hardware (RTS, CTS), XON/XOFF
Power Input DC 12V, 1A external power adapter 32 Port Model mains powered
Casing SECC metal chassis with DIN rail bracket
Operating Temperature 0°C to 60°C (32°F to 140°F)
Storage Temperature -40°C to 85°C (-40°F to 185°F)
Operating Humidity 0% to 80% RH
Safety Approvals CE, FCC, UKCA