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A USB to RS232, RS422, or RS485 converter is a device that allows a computer to communicate with serial devices that use one of these three serial communication standards. These converters are typically plugged into a computer's USB port, and provide one or more serial ports for connecting to serial devices.
The reason for using a USB to serial converter instead of a serial card is that many modern computers, such as laptops, tablets and some desktop computers, no longer have serial ports. USB ports, on the other hand, are commonly found on all types of computers, making USB to serial converters a more versatile solution for connecting to serial devices.
In addition to their ease of use, USB to serial converters also offer other advantages over serial cards. For example, they are typically smaller and can be connected externally where a serial card has to be built in and mounted in a notebook, which can be useful in service situations where you have to connect to a serial device on the move (PLC, Energy meter, Heat meter, Alarm system or other equipment with RS232/RS422/485 interface.They also typically do not require any additional power supply as they draw power from the USB port, which can make them more convenient to use.
Another advantage of USB to serial converters is that they often come with drivers and software that make them easy to install and configure. This can be especially useful for people who are not familiar with configuring serial cards, or who need to quickly connect to a serial device without spending a lot of time on configuration.
The USB to serial converter works by translating the USB signals from the computer to the appropriate signals for the serial device and vice versa. This allows the computer to send and receive data from the serial device as if it were connected directly to a serial port on the computer.
USB to serial converters are commonly used to connect computers to various types of industrial equipment, such as sensors, programmable logic controllers (PLCs), and other devices that use serial communication. They are also used to connect older serial devices to modern computers that no longer have serial ports.
Disadvantages of USB to RS232/422/485
This type of converter cannot be used with dongles (hardware lock to software) as the COM port appears as virtual, which is not accepted by dongles. Drivers for the OS are included. Does not occupy IRQ, DMA or I/O port - COM ports can be "remapped"
USB A to Straight-Through RS232 serial adapter
With DB9 male
With 9 x data monitoring LEDs (TX, RX, PWR)
COM port assignments are maintained across reboots
Max Baud Rate: 921.6 Kbps | 1, 1.5, 2 stop bits
Odd, Even, Field, Space, No Parity Mode
Hardware Flow Control (CTS/RTS and/or DSR/DTR)
Software Flow Control (XON/XOFF) | Chipset: PL2303-GC
Compatible with Windows®, Mac OS and Linux
USB A to Straight-Through RS232 serial adapter
With DB9 male
With 3 x data monitoring LEDs (TX, RX, PWR)
COM port assignments are maintained across reboots
Max Baud Rate: 921.6 Kbps | 1, 1.5, 2 stop bits
Odd, Even, Field, Space, No Parity Mode
Hardware Flow Control (CTS/RTS and/or DSR/DTR)
Software Flow Control (XON/XOFF) | Chipset: PL2303-GC
Compatible with Windows®, Mac OS and Linux
USB-C to Straight-Through RS232 serial adapter
With DB9 male
With 9 x data monitoring LEDs (TX, RX, PWR)
COM port assignments are maintained across reboots
Max Baud Rate: 921.6 Kbps | 1, 1.5, 2 stop bits
Odd, Even, Field, Space, No Parity Mode
Hardware Flow Control (CTS/RTS and/or DSR/DTR)
Software Flow Control (XON/XOFF) | Chipset: PL2303-GC
Compatible with Windows®, Mac OS and Linux
USB-C to Straight-Through RS232 serial adapter
With DB9 male
With 3 x data monitoring LEDs (TX, RX, PWR)
COM port assignments are maintained across reboots
Max Baud Rate: 921.6 Kbps | 1, 1.5, 2 stop bits
Odd, Even, Field, Space, No Parity Mode
Hardware Flow Control (CTS/RTS and/or DSR/DTR)
Software Flow Control (XON/XOFF) | Chipset: PL2303-GC
Compatible with Windows®, Mac OS and Linux
MOXA, 1-port RS-232 USB to serial adapter.
Compatible with USB 2.0 and 12 Mbps USB data rate
921.6 Kbps maximum baud rate for super fast data transfer
Drivers are provided for Windows, WinCE and Linux
DB9 male. USB2.0 with 80cm cable
LEDs for displaying USB and TxD / RxD activity
15 KV ESD protection for all serial ports
OS support: Windows 11, 10, 8.1, 8, 7, Vista, ME, and XP Windows Server 2022, 2019, 2016, 2012 R2, 2012, 2008 R2, 2008, 2003, 2000, and NT
Få en COM-port på PC via USB porten
MOXA USB to RS232/422/485 converter.
Kompatibel med USB 2.0
Software selectable RS232, RS422, 4-wire RS485 and 2-wire RS485
Certified drivers for Windows, WinCE 5.0 and Linux
15 KV ESD protection
Supporting Win10
USB to 1 x RS422 / RS485, w./ screw terminal
Max speed up to 921.6 Kbit/s - RS422 / 485 port
Select port type from DIL switch and jumper
Default set to RS422
Supports Win7, 8/8.1, 10, 11, Server 2008 R2, Server 2012 R2, 2022
(WHQL Certified)
Get a RS485 / RS422 port on the PC via the USB port
Software for choosing a fixed COM port - very useful
Compatible with USB 2.0
12 Mbps USB data rate
921.6 kbps maximum baud rate
Driver for Windows, WinCE, and Linux
Mini DB9 male for terminal block adapter
LED for indication of USB and TxD / RxD activity
15 kV ESD protection for 2 kV optical isolation
Get a COM port on the Android Tablet or Android phone via USB port
Connect 1 x RS232 equipment to Android Tablet / phone
Connect to micro USB port on the Tablet / Phone
Baud rate up to 921.6 kbit / s
High-speed USB to RS232/422/485 adapter
Transmission speed - up to 921.6 kbps
Supports USB 1.2/2.0/3.0
3000V DC isolation on RS232/422/485
RS232/422/485 cannot be used simultaneously
Supplied via the USB port
Automatic RS485 Direction Control
Temperature range: -25°C - +75°C
DIN rail mounting
Windows 98/ME/2000/XP/Vista (32/64-bit)
Windows 7 / 8.1 / 10 (32/64-bit)
Win 2012
Linux
USB 2.0 to RS232 / Serial / DB9 adapter cable
Supports USB2.0 / 1.1 and 1.0
Prolific Chipset
8.7
bit OS Support WIN XP / 2000/98/7 / 10.8, linux and Mac
60 cm cable
Get a RS485 or RS422 or RS232 port on the PC via the USB port
Galvanic isolation (optical) 2KV
DB9 male and screw terminal to 232/422/485 connection
Termination by Jumpers
Baud rate 300bit / s two 921.6 kbit / s
selectable RS232, RS422 and RS485 via DIP switch
Supports Win7 / 8/10 and over as well as MAC
Powered through USB (5V)
Operating Temp . 0 ° to 55 ° C,
Get a COM port on the PC via the USB port
USB to RS232 7 or 8 bit
RS232 signals: DCD, RxD, TxD, DTR, GND, DSR, RTS, CTS, RI
Up to 921.6 kbit/s - FTDI chip
DB9 male
With thumb screws
Fits equipment with COM port
USE THE INCLUDED DRIVER!
Get an RS485 or RS422 port on the PC via the USB port
Galvanic isolation (optical) 2KV - 3 x 6N137 IC chip
DB9 male and screw terminal for serial connection
Baud rate up to 921.6 Kbit/s
Selection of port type with DIP switch
Support Win 10, Android
FTDI chipset FT232RL
Get a COM port on the PC via the USB port
USB to RS232, galvanic isolation
Transmits TxD, RxD and GND only
Supporting Win10
Serial to USB converter with 1 x RS232/422/485 port
Respects +/- 11volt data signals
Galvanically isolated on the RSxxx output
Self-tuner Baud Rate
Automatic direction control
Powered from the USB port
USB connector: Type B
Supports USB 1.1, 2.0 and 3.0
COM port: terminal block
Adds eight high-speed RS-232/422/485 serial ports via USB connection
2k bytes transmitter and receiver
Requires no IRQ, DMA, I/O port
RS-232 max bit rates of up to 1 Mbps
RS-422/485 maximum bit rates of up to 10 Mbps
Automatic transmission buffer control for 2-wire RS-485 half-duplex operation
Biasing and terminating resistors installed on board
Supported RS-232 signals: DCD, RxD, TxD, DTR, GND, DSR, RTS, CTS, RI
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
Data Bits: 7/8
Parity: None, Even, Odd, Mark, Space
Stop Bit: 1, 2
Flow Control: Hardware (RTS, CTS), XON/XOFF
Monitor LEDs for TxD, RxD indicating port status
Built-in AC to DC switching power supply, 100VAC to 240VAC
Virtual COM port drivers available for Windows 11, 10, 8.1, 8, 7, Vista, 2003, XP, 2000
Win Server: 2000 up to 2018, Linux, MAC
Industrial quality metal case with DIN bracket for DIN rail mounting
Få 4 stk. RS232 porte på PC via USB porten
Forbind 4 x RS232 enheder til USB port
Metal kabinet og med vægmontering
Baudrate op til 115,2 kbit/s
Supporterer ikke hardware licens nøgler
Supporting Win10
Get 2 pcs. COM ports on the PC through USB port
Separate USB cable AM and BM
Supporting Win7 / 8
Cable included
