COM-4CN-USB | 4ch USB to RS-232C Converter | Contec Americas Contact Sales Department for Pricing New COM-4CN-USB 4ch RS-232C USB 2.0 Bus Power 921,600 bps 9-pin D-SUB VCCI-A · FCC-A · CE · UKCA USB 2.0 unit expanding a PC USB port into four RS-232C serial communication ports. Supports up...
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COM-4CN-USB | 4ch USB to RS-232C Converter | Contec Americas
NewCOM-4CN-USB4ch RS-232CUSB 2.0 Bus Power921,600 bps9-pin D-SUBVCCI-A · FCC-A · CE · UKCA
USB 2.0 unit expanding a PC USB port into four RS-232C serial communication ports. Supports up to 921,600 bps with 128/384 byte FIFO buffers per channel. Bus-powered, compact design with 9-pin D-SUB connectors, DIN rail mount, and -20 to +60°C operation.
The COM-4CN-USB expands a single USB port of a PC into four RS-232C-standard serial communication ports. Each port features a 9-pin D-SUB connector, just like a PC, allowing the use of commercially available RS-232C cables. The product supports baud rates up to 921,600 bps and includes separate 128-byte transmit and 384-byte receive FIFO buffers per channel.
Single USB-Serial Adapter
1 channel only
Requires multiple adapters for 4 ports
Consumes multiple USB ports
Messy cabling
COM-4CN-USB
4 RS-232C channels
Single USB connection
Compact all-in-one design
Standard 9-pin D-SUB connectors
Using the device driver COM-DRV, the product can be used in the same manner as standard COM ports of a PC, supporting Win32 API DCB structures and Linux standard system calls. A diagnostic program is included to confirm hardware operation and perform communication tests.
02
Compact & Versatile Design
Engineered for industrial and commercial applications, the COM-4CN-USB offers flexible installation options and robust performance in a compact form factor.
Compact design — 188.0(W) x 78.0(D) x 30.5(H) mm for space-saving installation.
Wide operating temperature — -20 to +60°C for harsh environments.
USB bus powered — No external power supply required.
DIN rail mounting — Standard DIN rail mechanism for easy panel installation.
VCCI Class A, FCC Class A, CE (EMC Class A, RoHS), UKCA
Connector (RS-232C)
9-pin D-SUB (male) x 4
Connector (USB)
USB Type-A / USB mini-B
04
Connections & LED Indicators
The COM-4CN-USB features four 9-pin D-SUB connectors (male) for RS-232C connections, with standard pin assignments compatible with PC COM ports. LED indicators provide visual status of power and communication activity.
POWER (Green) — Indicates power status (ON = power supplied).
RxD (Yellow) — Indicates reception status (ON = receiving data).
TxD (Green) — Indicates transmission status (ON = sending data).
Software control — RTS, CTS, DTR, DSR lines can be controlled and monitored via software.
Cable selection — Use straight-through or crossed (null modem) cable depending on the connected device.
05
Certifications and Compliance
VCCI Class A — Japanese voluntary control for electromagnetic interference (commercial and industrial environments).
FCC Class A — U.S. emissions compliance for industrial use environments.
CE (EMC Directive Class A + RoHS Directive) — European conformity for electromagnetic compatibility and restriction of hazardous substances.
UKCA — UK Conformity Assessed marking for UK market compliance.
06
Optional Accessories
Part Number
Description
Use
CPS-MAG01-4
CONPROSYS Series Magnet (Four Piece Set)
Alternative mounting option
Ready to expand your serial ports?
The COM-4CN-USB is available through Contec Americas on a quote basis. Contact our sales team to discuss your application, quantity requirements, and integration needs.
Tags COM-4CN-USBUSB to RS-232C4ch Serial ConverterRS-232CIndustrial Serial921.6 kbpsUSB 2.0Bus PoweredDIN Rail MountContec AmericasVCCI-AFCC-ACEUKCA
