4 Port USB to RS-232/422/485 Auto Setup Adapter for Win – Linux – Mac

The USBG-4COM-Pro 4 Port USB to RS-232/422/485 serial adapter with Auto Setup for Windows, Linux, and Mac, allows further use of existing DB-9 pin serial devices on your computer system, even where the computer doesn’t offer serial ports. The USGB-4COM-PRO is extremely flexible in  use of offered serial communication standards.

The 4 Port USB Serial Adapter has 128 byte FIFO memory chip and allows high-speed communication. If your system is heavily loaded, this adapter’s unique features will reduce the system load. The serial port also allows unusual speed settings like 500.000bps.

Additional Features:

• Adds four RS-232, RS-422 or RS-485 serial port by connecting to a USB port
• Four DB9 male connectors
• Easy operation mode change via software utility or console port
• Installed as standard Windows COM port
• SECC metal chassis with DIN rail bracket
• Requires no IRQ, DMA, I/O port
• Full RS-232 modem control signals and hardware/software flow control
• RS-232 data signals: TxD, RxD, RTS, CTS, DSR, DTR, DCD, RI, GND
• 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
• Tx ,Rx Termination resistors installed on-board and easy enable/disable via software utility or console port
• Tx ,Rx BIASing resistors installed on-board and easy enable/disable via software utility or console port
• High speed serial port with the baud rate up to 921.6K bps
• LEDs of Power, TxD and RxD for easy port monitoring and diagnostics
• LEDs of mode indicating serial port operation mode
• requires an external DC 5V power adapter
• Easy plug and play installation and RS-232/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

OS Support:

• Windows XP, Vista, Windows 7, Windows 8, and Windows 10
• Mac OS 10.X and Linux

Dimensions:

• 172 x 95 x 29 mm (W x L x H)

Package Contents

• 4 port RS232/422/485 serial adapter
• USB A to B cable
• Din Rail mounting plates and screws
• Driver Disc

Product Specifications

Technical Specifications:

RS-232 & RS-422 & RS-485 DB9 Male Connector Pin-outs

RS-232 Male

RS-232 Signal Pin-outs of DB-9 Male

Pin Signal     1 DCD     2 RxD     3 TxD     4 DTR     5 GND     6 DSR     7 RTS     8 CTS     9 RI

RS-422 DB9 Male

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

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

USB2-4COM PRO                                    RS-422 Device

RS-422 with Handshaking

USB2-4COM PRO                                   RS-422 Device

RS-485 Signal Wiring

Point-to-Point 4-Wire Full Duplex

USB2-4COM PRO                               RS-485 Device

Multidrop RS-485 2-Wire Half-duplex

USB2-4COM PRO                               RS-485 Device

Optional Accessories

The 4 Port USB to RS-232/422/485 Auto Setup Adapter has certain accessories that work with it. These accessories are what you can order if needed.

Replacement Parts

Did you misplace or break a part that came with your 4 port serial adapter? Purchase it here!

Product Documentation & Drivers

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