Usb Rs232 Rs485 Rs422s of 2025
Best Choice1
Clicked 4 times in the last monthStarTech.com10% OffStarTech.com 4 Port Serial Hub USB to RS232/RS485/RS422 Adapter - Industrial USB 2.0 to DB9 Serial Converter Hub - IP30 Rated - Din Rail Mountable Metal Serial Hub - 15kV ESD Protection, TAA
Main highlights- WIDELY COMPATIBLE: To connect industrial grade equipment to any terminal, the USB to multiple DB9 male serial converter supports current and legacy Windows, Linux, macOS, as well as embedded platforms
- RUGGED & RELIABLE: This industrial metal USB to serial adapter hub adds 4 RS-232/422/485 ports & 1 USB 2.0 port w/ 15kV ESD surge protection (level 4), IP30 rating & locking connectors on all ports
- MOUNTING OPTIONS: This metal mountable 4-port serial hub w/ 6ft (1.8 m) screw-lock USB cable incl. installs securely to a desk, wall or DIN rail using the built-in mounting ears & incl. DIN brackets
- FLEXIBLE POWER: This serial hub can be powered with either the 12V screw-locking power adapter or the 5V USB input, while each serial port (pin 9) can be set to 5V, 12V (power adapter required), or 0V
- 4 SERIAL PORTS: The ports on this USB to serial converter can be individually configured to RS232, RS422 or RS485 (2wire/4wire) at baud rates up to 921.6Kbps for devices like barcode scanners/printers
9.9Exceptional
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Value for Money2
StarTech.comSTARTECH.COM 2 Port USB to RS232 RS422 RS485 Serial Adapter with COM Retention
Main highlights- USB-powered; No additional external power adapter required
- Includes a bracket for wall mounting the USB to Serial adapter
- Features rugged screw-lock USB port to ensure cords are not accidentally disconnected
- Both ports can function simultaneously with mixed or matched communication protocols
- Backwards compatible with USB 1.1
9.8Exceptional
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3
wavesharewaveshare FT232RNL USB to RS232/485/422/TTL Interface Converter, Industrial Isolation
Why we love it
Reliable and stable communication.
Easy installation and setup.
Robust protection features.
9.6Exceptional
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4
DTechDTECH USB to RS422 RS485 Serial Port Converter Adapter Cable with FTDI Chip Supports Windows 11 10 8 7 XP Mac -1.5 Feet
Main highlights- rs485 serial to usb converter is with high performance quality processor chip (FTDI-chipset FT232) and I/O auto conversion circuitry which makes RS 485 to USB convertor one of the most reliable dongle on the market
- USB to RS485/RS422 converter It easily lets you connect RS485 or RS422 device directly to your Laptop PC computer USB port (built with LED Troubleshooting Indicators)
- USB to RS485 cable adapter is Ideal for industrial environment -provides 600w surge protection and 15KV ESD isolated protection on signal pins to protect costly and often sensitive control equipment against electrical damage
- There are no IRQ and COM port conflicts, since the port do not require any additional IRQ, DMA, memory as resources on the system; RS485 for Half duplex and RS422 for Full duplex communication
- 1.5 ft serial RS-422 RS-485 to USB adapter cable supports windows 11 10 8 7, Mac and more; plug-and-play, No power supply needed
9.4Excellent
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5
BUELECBUELEC Industrial High Speed USB to RS232/RS485/RS422/TTL 4 in 1 Converter,Magnetic Isolated,Built-in 3000V Dual Isolation Power Module,Two-Way Independent Data Transmission,FT4232 Chipset
Main highlights- BUELEC USB Converter Support Windows,Linux,MAC,Android,Windows CE
- BUELEC USB Converter Power supply instructions,sending instructions,receiving instrutions
- BUELEC USB Converter Output interface Standard TTL, RS-232(Full-duplex),RS-485(Half-duplex),RS-422(Full-duplex)
- BUELEC USB Converter Isolation voltage Using ADI high performance magnetic decoupling isolation program
- BUELEC USB Converter Baud rate TTL(110~5Mbps),RS-232(110~1Mbps),RS-485/422(300~8Mbps),
Using ADI high performance magnetic decoupling isolation program
9.3Excellent
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6
DTechDTech USB to Serial Adapter RS485 RS422 R232 (3 in 1 Interface) Supports DC 5V with Breakout Board LED Lights for Multi-Kind Control Devices Windows 11 10 8 7 XP Mac (5ft)
Main highlights- Type A USB to RS232 RS485 RS422 adaptor cord with breakout connector is ideal for laptop computer, router, GPS, programming machine, printer, scanner, label writer, modem, digital camera, palm PC, LED INFO display equipment, controller CNC, PLC control, SCADA, etc
- Supports multiple systems windows 11 10 8 7 CE, Mac osx, Linux; plug and play, No power supply needed; 2 wire RS485 Half duplex (485A Positive, 485B Negative), and 4 wire RS422 Full duplex data communication
- High performance CP2102N chip and I/O auto conversion circuitry makes it a reliable serial to USB adapter converter
- 5 ft shielded USB to serial cable is ideal for industrial environment - provides 600w surge protection to protect costly and often sensitive control equipment against electrical damage
- 3 protocols in 1 cable: RS232/RS485/RS422 USB to serial adapter 5ft for Multi-Kind control devices: easily let you connect RS-232, RS-485 or RS-422 device directly to Laptop computer via USB port
9.2Excellent
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7
UOTEKUOTEK 4.9Ft USB to RS485 RS422 RS232 Converter USB-A RS-232 RS-485 RS-422 Cable Serial DB9 Connector Full Half Duplex UT-8890
Main highlights- Working mode: 232 full duplex, asynchronous work, point-to-point or multi-point, 2-port half duplex, 4-port full duplex
- Transmission distance: RS-232 end 5 meters, USB port no more than 5 meters; RS-485/422 end 1200 meters (9600bps when), USB port no more than 5 meters
- Standard: Compliant with USBV.1, 1.0, 2.0 standard and ELA RS-485, RS-422S standard
- Interface protection: Surge protection, ±15KV electrostatic protection
- Direction control: Data flow direction automatic control technology, automatic control of data transmission direction
8.9Very Good
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8
DTechDTECH RS232 to RS485 RS422 Serial Communication Data Converter Adapter Mini-Size
Main highlights- Unique serial charge pump drive technology, no external power supply, the real three-wire communication (TXD,RXD,GND). No need serial port initialization
- Supports baud rates up to 115.2 Kbps; Automatic sense serial signal rate
- Supports a maximum connection distance of 4000ft (1200m)
- Pro grade RS232 to RS485 / RS422 converter. It easily lets you connect any RS485 or RS422 device directly to COM port
- Best solution for the communication between serial port and RS485 or RS422 device
8.8Very Good
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9
JUXINICEDB9 Serial Cable Extension, RS232/RS485/RS422 - 3 Foot, D-USB 9-pin Port Adapter, No Soldering - Black
Main highlights- Multiple communication protocols：DB9 cable Straight-through wiring (i.e. pin 1 to pin 1) design per industry standards, Supports RS232/RS485/RS422 and other communication protocols. 9 Wires Core color : 1-black, 2-brown, 3-red, 4-orange, 5-yellow, 6-green, 7-blue, 8-gray, 9-white
- DB9 pin connector are copper core gold-plated, with good plug resistance and contact. DB9 bare wire adopts black PVC molded and injection molded shell
- DB9 male connector to bare wire ,Each wires end is equipped with red cold crimping terminals（Red copper material）and Clear Cable Marker for 1 to 9, which are firmly crimped and do not fall off , Easy to use
- DB9 connector is used for automatic control equipment, PLC controllers, touch screens, programmers, data converters, servo motors, automatic control equipment, industrial control equipment, cash register, tax control machine, computer, etc.
- DB9 Serial Cable wrapped with aluminum foil+high-density woven mesh to form double-layer shielding, with strong anti-interference ability. 9 wires cores are made of 26AWG tinned copper, OD 6.0mm.
8.6Very Good
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10
SerialGearIndustrial USB to RS-232/422/485 Serial Adapter - Dual Connectivity, Surge Protection, and Terminal Block Power Output
Main highlights- [ Reliable Protection ] : Built-in 10KV surge protection ensures safe operation in demanding environments, with fully configurable COM Ports to preserve assignments after reboot.
- [ Power Output Capability ] : Delivers 5V/150mA through the terminal block to power serial devices.
- [ Instant Serial Expansion ] : Adds RS-232, RS-422, or RS-485 communication to your system via USB - ideal for printers, data collection, POS systems, bar code scanners, automation, and more.
- [ Flexible Connectivity ] : Includes both DB9 male and 6-pin terminal block connectors for versatile setups.
- [ Fast Data Transfer ] : Supports baud rates up to 921.6K bps with non-standard rate compatibility.
- [ Durable Construction ] : SECC metal chassis with surface mounting flanges perfect for installations in labs, warehouses, or heavy machinery.
8.4Good
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