USB-8COMi-RM

Rack-mountable 8-Port USB to Serial Adapter (RS-232/422/485), DIN-rail & Wall Mountable Metal Case, 15KV ESD Protection

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Description

The USB to Octal Serial Adapter is designed to make serial port expansion quick and simple. Connecting to a USB port on your computer or USB hub, the USB Serial Adapter instantly adds eight RS-232/422/485 multi-electrical interface serial communication ports to your system. By taking advantage of the USB bus, the USB Serial Adapter makes it easier than ever to add 8 serial ports and serial devices to your system with easy plug-and-play and hot plug features. Adapting the new technology, the serial port expansion now takes the new bus with easy and convenient connectivity.

Plugging the USB Octal Serial Adapter to the USB port, the adapter is 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 adapter is designed with external switches to set RS-232, RS-422 or RS-485 ports and different operation modes conveniently. There is no need to open the chassis to set the ports.

The USB Serial Adapter provides instant connectivity to RS-232, or RS-422/485, communication devices for factory automation equipment, multi-drop data collection devices, barcode readers, time clocks, scales, data entry terminals, ATMs and serial communication in harsh environment. The USB to Serial Adapter is suitable for remote access, retail and industrial application, data collection and other applications requiring high speed RS-232, or RS-422/485, communication ports.

Features


  • Adds eight high speed RS-232/422/485 serial ports via USB connection
  • 2k Bytes transmit and receive
  • Requires no IRQ, DMA, I/O port
  • RS-232 max bitrates up to 1Mbps
  • RS-422/485 max bitrates up to 10Mbps
  • Auto transmit buffer control for 2-wire RS-485 half-duplex operation
  • Biasing and termination resistors installed on-board
  • Supported RS-232 signals: DCD ,RxD ,TxD, DTR,GND,DSR,RTS,CTS
  • Supported RS-422 signals: TxD-, TxD+, RxD+, RxD-, GND
  • Supported RS-485 4 wire signals: TxD-, TxD+, RxD+, RxD-, GND
  • Supported RS-485 2-wire signals: Data-, Data+, GND
  • Monitor LEDs of TxD, RxD indicating port status
  • Built-in AC to DC switching power supply, 100VAC to 240VAC
  • Industrial-grade metal case with DIN rail ears for DIN rail mounting
  • Supports Windows 11, 10, 8.1, 8, 7, XP, Windows Server 2025, 2022, 2019, 2016, 2012 R2, 2012 and 2008 R2
  • Supports Linux Kernel version 3.0 and later
  • Supports Apple-provided VCP on OS X 10.9 and later

Specifications

USB Bus
InterfaceUSB 2.0 High Speed, USB 1.1 compliant
Speed480Mbps, hi-speed USB
USB ConnectorUSB type B
 
Serial Interface
InterfaceRS-232/422/485
Number of Ports8
ConnectorDB9 male
Max. SpeedRS-232:up to 1Mbps
RS-422/485:up to 10Mbps
RS-232 SignalsDCD, RxD, TxD, DTR, GND, DSR, RTS, CTS
RS-422 SignalsTxD-, TxD+, RxD+, RxD-, GND
RS-485 Signals (4 wire)TxD-, TxD+, RxD+, RxD-, GND
RS-485 Signals (2 wire)Data-, Data+, GND
FIFO2k bytes transmit /receive FIFO
Protection15kV ESD protection for all signals
 
Serial Communication Parameters
Data Bits7, 8
ParityNone, Even, Odd, Mark, Space
Stop Bit1, 2
Flow ControlHardware (RTS, CTS), XON/XOFF
 
Drivers Support
WindowsWindows 11, 10, 8.1, 8, 7, XP Windows Server 2025, 2022, 2019, 2016, 2012 R2, 2012 and 2008 R2
LinuxLinux Kernel version 3.0 and later
MacApple-provided VCP on OS X 10.9 and later
 
Power
Power InputBuilt-in AC to DC switching power supply, 100VAC to 240VAC
 
Mechanical
CasingSECC metal chassis suitable for DIN rail mounting Rack-mounting brackets included
 
Environmental
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

Document


Product Manual

Software


Driver Installation

You need to install driver first, prior to hardware installation. Do not connect the USB-to-Serial Adapter to the USB port of your computer, before you finish driver installation. 

Uninstalling Drivers

Uninstallation Guide For Windows 2000

Uninstallation Guide For Windows 10, 8.1, 8, 7, Vista, XP, Server 2016, Server 2008, Server 2003

Pinout

RS-232 DB9 Male Connector Pinout

PINSIGNAL
1DCD
2RxD
3TxD
4DTR
5GND
6DSR
7RTS
8CTS
9-
WordPress Table

RS-422 DB9 Male Connector Pinout

PINSIGNAL
1TxD- (A)
2TxD+ (B)
3RxD+ (B)
4RxD- (A)
5GND
6RTS- (A)
7RTS+ (B)
8CTS+ (B)
9CTS- (A)
WordPress Table

RS-485 4-Wire (Full duplex) DB9 Male Connector Pinout

PINSIGNAL
1TxD- (A)
2TxD+ (B)
3RxD+ (B)
4RxD- (A)
5GND
WordPress Table

RS-485 2-Wire (Half duplex) DB9 Male Connector Pinout

PINSIGNAL
1Data- (A)
2Data+ (B)
5GND
WordPress Table