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



ComplianceUSB 2.0 High Speed, USB 1.1 compliant
Speed480Mbps, hi-speed USB
ConnectorUSB type B
FIFO2k bytes transmit and receive
Operating SystemsWindows 2000 up to Windows 10
Windows Server 2000 up to 2018
Linux kernel 2.6+
Mac OS X support available
InstallationThe driver is already installed (Linux), or automatically downloading and installing device drivers after Device connection (Windows).
Serial Interface
Number of Ports4/8/16/32
ConnectorDB9 or 5-pin terminal block
Max. SpeedRS-232:up to 1Mbps RS-422/485:up to 12Mbps
RS-232 SignalsTxD, RxD, GND
RS-422 SignalsTxD-, TxD+, RxD+, RxD-
RS-485 Signals (4 wire)TxD-, TxD+, RxD+, RxD-, GND
RS-485 Signals (2 wire)Data-, Data+, GND
Protection15kV ESD protection 600W surge protection
3000V DC optical isolation
Serial Communication Parameters
Data Bits7, 8
ParityNone, Even, Odd, Mark, Space
Stop Bit1, 2
Flow ControlHardware (RTS, CTS), XON/XOFF
Power InputDC 12V, 1A external power adapter 32 Port Model mains powered
CasingSECC metal chassis with DIN rail bracket
Operating Temperature0°C to 60°C (32°F to 140°F)
Storage Temperature-40°C to 85°C (-40°F to 185°F)
Operating Humidity0% to 80% RH
Safety ApprovalsCE, FCC, UKCA