16-Port RS-422 485 USB-to-Serial Adapter

The USB-16COMi-M USB to 16-Port RS-422 485 Serial Adapter is designed for industrial applications and environments making your user experience more efficient when it comes to serial port expansion. The USB 16COM Serial Adapter instantly adds sixteen (16) RS-232 serial communication ports to your system.

Plug-and-Play  installation with hot plug features set the adapter up for automatic detection for use as a COM port. There are no IRQ & COM port conflicts or configuration needed, since the ports do not require any additional IRQ, DMA, memory as resources on the system. The adapter has a built-in switching power supply of 100V/240V (input) inside the chassis.

DIN rail brackets for an industrial mounting environments  are included for mounting to a 19 inches rack, and the rack mount kits are included with the adapter. The USB 16COM Serial Adapter provides instant connectivity with modems, ISDN TAs, PDAs, handheld & pocket PCs, digital cameras, POS, serial printers. It is suitable for remote access, retail and industrial applications, data collection and other applications requiring high speed RS-232 serial communication ports. There is no need to open the chassis to set the operation modes since the 16 DIP switches are located externally (pictured above) for easy RS-422, RS-485 mode settings.

Additional Features:

• Adds sixteen RS-422 or RS-485 serial ports by connecting to a USB port
• External DIP switches for easy RS-422, RS-485 mode settings
• Installed as standard Windows COM port
• SECC metal chassis with DIN rail bracket
• RS-422 data signals: TxD-, TxD+, RxD+, RxD-, GND, RTS-, RTS+, CTS+, CTS-
• RS-485 4-wire data signals: TxD-, TxD+, RxD+, RxD-
• RS-485 2-wire data signals: Data-, Data+
• Automatic transmit and receive control for 2-wire RS-485 half-duplex mode
• Built-in termination and biasing
• High speed serial port with the baud rate up to 921.6K bps
• Non-standard baudrates supported
• LEDs of Power, TxD and RxD for easy port monitoring and diagnostics
• Serial port protected with surge protection of 10KV
• Built-in switching power supply of 100V~240V
• Easy plug and play installation and RS-422/RS-485 device connection
• COM port number assigned can be changed to any COM port number required
• Works with USB 1.1 & 2.0 host port
• Supports Windows 10, 8, Windows 7, Vista, 2003, XP, 2000 and Linux
• Standard 19-inch, 1U rackmount chassis

Package Contents

• 16 port RS422/485 serial adapter
• Din Rail mounting plates and screws
• Rack mounting brackets and screws
• USB A to B cable
• Power cord
• Driver disk

Product Specifications

Technical Specifications:

RS-422 & RS-485 DB9 Male Connector Pin-outs

RS-422 DB9 Male

RS-422 Signal Pin-outs of DB-9 Male

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

RS-485 DB9 Male

RS-485 4-Wire (Full duplex) Signal Pin-outs of DB-9 Male Connector

Pin Signal     1 Tx- (A)     2 Tx+(B)     3 Rx+(B)     4 Rx- (A)     5 GND

RS-485 2-Wire (Half duplex) Signal Pin-outs of DB-9 Male Connector

Pin Signal     1 Data- (A)     2 Data+(B)     5 GND

RS-422 Signal Wiring

Point-to-Point 4 Wire Full Duplex

USB-16COMi-M                                    RS-422 Device

RS-422 with Handshaking

USB-16COMi-M                                   RS-422 Device

RS-485 Signal Wiring

Point-to-Point 4-Wire Full Duplex

USB-16COMi-M                               RS-485 Device

Multidrop RS-485 2-Wire Half-duplex

USB-16COMi-M                               RS-485 Device

Optional Accessories

The 16 port RS422/485 serial adapter has certain accessories that work with it. These accessories are what you can order if needed.

Product Documentation & Drivers

Need drawings, CAD files, or other compliance documentation? Click HERE