Best Port Serial Adapters in 2026

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Serial adapter allows a serial device to be connected to a USB computer

Plug-and-play convenience:DB9 serial port is seen as a COM port by your computer, and is available for use by any program that accesses COM ports

No need for an external power adapter:draws power directly from your computer via the USB connection

Add an RS232 serial port with circuit isolation to your laptop or desktop computer through USB

1 Port FTDI USB to Serial RS232 Adapter Cable with Isolation

USB to RS232 Serial Adapter Cable

How it works: This USB to rs232 adapter connects to serial devices via a USB port, such as serial digital cameras equipped with DB9, label writers, handheld computers, barcode scanners, PDAs, etc. This USB to serial adapter is widely used in shopping malls, offices, etc.

Multi-system compatibility: This usb to serial adapter is compatible with Win 7 8 10 Win XP Vista Mac OS Linux system. It would automatically update the driver for Win8 and above. For windows 7, Mac OS, please install the CD driver in the package. Note: Linux only supports the use of kernel version 2.6-5.2.

Multi-device compatibility: This USB to rs232 adapter is suitable for computers (computers or laptops) to connect various RS232 serial devices, such as cash registers, LED and LCD text displays, digital cameras, POS, Bar code scanners, door control system, printers, CNC controllers, scanners, etc.

Product name : DB9 Serial adapter; terminal wire range : 12-24AWG

Design : Screw Type;Total Size : 58 x 35 x 21mm/2.3" x 1.4" x 0.83"(L*W*H)

Cable Hole Dia. : 5mm/0.2'' 6mm/0.23'' 7mm/0.27'' 10mm / 0.4";Material : Metal,Electric Part

Converts standard, straight wired cables to null modem wiring

Null modem configuration with pin 9 open.

Slimline design reduces leverage strain on computer ports

Allows any PC to connect serial devices and programs that communicate through COM ports

6 FT cable with standard USB Type A Male to standard 9-pin DB9 RS-232 serial connector

PL-2303 Chipset for widest possible compatibility with Windows, Mac, Linux, and other platforms

Wide range of applications: USB to RS232 DB9 male serial adapter can work with your Windows (10 / 8.1 / 8 / 7 / Vista / XP), MAC or Linux system and other platforms. USB adapter is designed to connect to serial devices, such as serial modem with DB9, ISDN terminal adapter, digital camera, label writer, palm computer, barcode scanner, PDA, cash register, CNC, PLC controller, tax printer, POS, bar code scanner, label printer, etc

High quality: ftdi usb serial,the latest ftdi chip set ensures more reliable and faster operation. USB 2.0 to RS232 male DB9 console cable will support 1Mbps date transfer rate

Most convenient: rs232 to usb simple installation, plug and play, COM port creation, baud rate can be changed to the required settings. USB power supply - no external power supply required.

USB TO RS232 SERIAL - Connect legacy DB-9 serial communications devices to a modern computer with USB

LEGACY SUPPORT - Add a 9-pin DB9 RS-232 serial port to any modern computer, replaces built-in or PCIe serial adapters, recommended for use with a serial cable or NULL modem cable

FLEXIBLE - Programmable baud rate from 75 bits per second to 128,000 bits per second. Plug-and-play creation of a COM port. Powered by USB; no external power needed

1 USB port to Dual RS-232 Serial Ports

Supports full RS232 Handshaking

Baud rates up to 921,600bps

MULTI-USE FUNCTIONALITY - Quad Port Serial Adapter with FT4232 FTDI Chipset, that supports an automatic handshake allows for digital signage to connecting point of sales systems and barcode scanners.

EASY INSTALLATION - This serial adapter lets you enjoy simple installation and operation with COM port retention that provides robust serial connectivity for legacy devices. With no power supply needed, easy plug and play USB interface options.

COMPATABILITY - With support on multiple OS platforms this makes ours very versatile. Supported OS platforms are Windows 7, 8 and 10 as well as Linux and MacOS 10.X

HIGH QUALITY&DURABLE: Pure copper plated joints, fine solder joints, resistance to plug, and good contact to ensure high-quality, durability and a long life. The outer casing is made of environmentally friendly PP engineering material, which is soft and durable.

EASY TO USE: No welding required, 128 type environmental protection copper terminal design, no need for soldering iron and cumbersome tools, easy wiring. The housing is designed with a folding buckle for easy assembly and disassembly without tools.

HIGH COMPATIBILITY: It can connect all kinds of serial devices. Such as computer and tax control machine, digital camera, PLC, PDA, MODEM, set-top box, barcode machine, industrial instrumentation and other equipment for communication.

★ Please install drivers from CableCreation website before getting it to work.★ Connectivity: connect serial DB9 (9 PIN) devices such as a modem to a USB port on your computer. Installed as a standard Windows COM ports, Full RS-232 modem control signals, RS-232 data signals; TxD, RxD, RTS, CTS, DSR, DTR, DCD, RI, GND.

►Built-in with FTDI Chipest: supports Windows 10/ 8.1/ 8/ 7/ Vista/ XP/ 2000 / Linux 2.4 or above, Mac OS X 10.6 and above,OpenBSD 2.9 and later & FreeBSD 4.7 and above.

►Wide Compatibility: USB to RS232 adapter works with modems, ISDN Terminal Adapters, digital cameras, label writers, palm PCs, PDAs, cashier register, CNC, PLC controller, tax printer, POS, bar code scanner, label printer, and devices with DB9 serial ports.

USB to RS485/RS422 converter It easily lets you connect RS485 or RS422 device directly to your Laptop PC computer USB port

RS485 Serial to USB 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

USB to RS485 cable adapter 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

BROAD COMPATIBILITY: The USB to VGA adapter offers a professional grade solution for connecting legacy or industrial RS232 serial devices to a laptop or desktop computer through USB.

COM RETENTION: The USB to serial RS232 adapter retains assigned serial COM port values in nonvolatile memory to automatically be assigned to the adapter serial port if disconnected and reconnected.

EASY INTEGRATION: A versatile connectivity solution for legacy serial peripheral devices, the USB to RS232 adapter cabler offers broad OS compatibility including Windows, Linux and Mac OS.

★【Excellent Quality】Brand New and High Quality DB9 Solderless RS232 D-SUB Serial to 9Pin Port Terminal DB9 Male Adapter Connector Breakout Board.

★【Powerful Function】Pure Copper Plated Joints, Fine Solder Joints, Resistance to Plug, And Good Contact to Ensure High-Quality, Durability and a Long Life.

★【Easy Installation】All Signal Ports Are Clearly Named and Labeled on Both Sides of The Board.The Housing is Designed with a Folding Buckle for Easy Assembly and Disassembly Without Tools.

⚡【Contact Seller】Free Lifetime Replacement or Money-back Guarantee if quality issue, please feel free to contact us via Amazon.1,Find your purchased order. 2,Click button "Contact Seller".

⚡【Upgraded 16mm DB9 Connector】No soldering needed! The BIFALE Upgraded DB9 connector is thinner than others. Thin but hard. Easier to install and disassembly. And has fine solder joints, which can withstand 2,000+ pluging and unpluging tests. Shell with non-slip design.

⚡【Premium 4N OFC 】The inner pin of db9 connector is made of 4N OFC material. Own a better connectivity, provide stable signal transmission. Anti-corrosion, anti-oxidation. All signal ports are clearly named and labeled on both sides of the board for quick wiring. Terminal wire range : 16-26AWG.

HOW IT WORKS: BENFEI USB to RS232 DB9 Male Serial Adapter is designed for connecting to serial devices such as DB9 equipped serial modems, ISDN Terminal Adapters, digital cameras, label writers, palm PCs, barcode scanners, PDAs etc through USB port with 1Mbps data transfer rate;

CONNECTORS: With standard USB Type A Male to standard Male 9-pin DB9 RS-232 serial connector; Please pay attention: it's not the USB to VGA cable or USB to DB9 cable. If you need USB-VGA, please refer to our detail page

CONDUCTOR & SHIELDING: Tinned Copper Conductor(Wire guage#24#28) and triple shielding ensure the best data transfer rate. Powered by USB port, no external power adapter required. Simple installation, plug & play after one time driver installation;

RS485 Serial to USB adapter enables you to make a stable connection for your PC and RS485 or RS422 device via USB port, no computer freeze, IRQ, DMA or COM port conflict

USB to RS485 converter with FTDI chip supports you the widest possible OS compatibility ( Windows 11, 10, 8, 8.1, 7, Vista, XP, Linux and Mac )

With power, TX and RX LED indicators to check connection and communication activity; terminal block is well-labeled for you to easily wire it to your device correctly

USB TO RS232 SERIAL – 5ft in length serial adapter. Connect legacy DB-9 serial communications devices to a modern computer with USB

EASY TEST - Easy test RS-232 host to device link. With a full LED, dual color display, tester output. This will make testing your connections with ease.

COMPATABILITY - With support on multiple OS platforms this makes our USB RS- 232 very versatile. Supported OS platforms are Windows 7, 8, 10, and 11 as well as Linux and MacOS 10.X

Works with any USB Bluetooth adapters, running in slave role: Pair with BT dongle. Led indicate Bluetooth connection status, flashing Bluetooth connectivity, lit the Bluetooth connection and open a port Backplane

Core module uses HC-06, leads from the module interface includes VCC, GND, TXD, RXD, reserve LED status output pin, the microcontroller can be judged by the foot state Bluetooth has connected KEY pin slave invalid.

Small size, low power consumption,high sensitivity for send and receive. Bluetooth version: V2.0+EDR &Operating voltage: 3.3V &Host Interface:UART &Storage Temperature:-40℃~+150℃&Signal coverage: 30ft &Item size: 4.3 * 1.6 * 0.7cm &Item weight: 3g.

Industrial grade USB to RS485 RS422 converter. It easily lets you connect any RS485 or RS422 device directly to your computer's USB port

The main chip is FTDI FT232RL. Built-in 15KV ESD protection and TVS overvoltage protection. Enough for you to deal with different occasions.

LED for RX TX and Power.

CONNECTIVITY – 3 ft. blue USB to RS-232 serial converter cable with clear USB jacket. Works by connecting the USB Type-A port into the host computer, and then connecting the RS-232 DB-9 male end to the female serial port.

LED INDICATORS - LED activity indicators for Power, TX and RX serial signals. The LED’s allow a visual indication of the signal activity as TX and RX RS-232 signals are communicating.

CHIPSET- FTDI Chipset Inside: FT232RL and Ultra Fast 920K ZyWyn ZT232E for superior operation in serial communication.

9 pin serial to USB cable male to male port allows PC to connect serial RS-232 devices and programs that communicate through COM port (NOT VGA-Monitor-Video-Cord )

RS232C DB9 to USB adapter with gold plated connector ensures reliable data communication compared to the nickel plated DB9 interface

RS232 to USB cord with prolific PL2303 chipset supports Windows 11 10 8.1 8 7, Mac OS8 or higher, Linux 2.4.0 and later

HIGH QUALITY&DURABLE: Pure copper nickel plated joints, fine solder joints, resistance to plug, and good contact to ensure high-quality, durability and a long life. The outer casing is made of environmentally friendly PP engineering material, which is soft and durable.

EASY TO USE: No welding required, 128 type environmental protection copper terminal design, no need for soldering iron and cumbersome tools, easy wiring.

HIGH COMPATIBILITY: It can connect all kinds of serial devices. Such as computer and tax control machine, digital camera,PLC, PDA, MODEM, set-top box, barcode machine, industrial instrumentation and other equipment for communication.

【20x4 LCD Display】With this shield, you can display whatever you want by programming the for Arduino board. Therefore, this is a perfect choice to make your project more interesting and vivid! Totally display 20 characters in one row, 4 rows can display 80 characters.

【IIC Interface Adapter】No need to buy the adapter extra, this kit contains a IIC/I2C/TWI Serial Interface Adapter, with witch you can start your project at any time.

【Easy to Use】 Less I/O ports are occupied, only four - VCC, GND, SDA (serial data line), SCL (serial clock line). Address of the module: 0x27

Wi-Fi Standard-IEEE 802.11n (draft); Wireless Transmission Speed-300 Mbps; Interfaces/Ports-Fast Ethernet Port-Yes; Interfaces/Ports-VGA-No; I/O Expansions-Expansion Slots-Not Applicable; Physical Characteristics-Height-0.7 inches

ISM Band-Yes; Wireless Security-WPA-PSK ; WPA2-PSK ; 64/128-bit WEP; ; Interfaces/Ports-Gigabit Ethernet Port-No; Interfaces/Ports-Serial Port-No; Power Description-Power Over Ethernet-No; Physical Characteristics-Width-2.4

Avoid long stringing cables Freedom to place your home entertainment center anywhere and still connect to the Internet

A simple, cost effective solution to process serial data communication between RS232 COM port devices over inexpensive cat5 cat6 RJ45 network cable

DB9 female to RJ45 modular adapter converts DB9 female connector into an RJ45 female connector (DB9 female - RJ45 Female pinout: 1-1, 2-2, 3-3, 4-4, 5-5, 6-6, 7-7, 8-8, 9-x)

A pair of DB9 to RJ45 socket coupler can be used a extender to extend rs232 serial signals up to 65ft

This USB 2.0 to RS-232 Serial Adapter provides instant connectivity with modems, ISDN Terminal Adapters, PDS, handheld & pocket PCs, digital cameras, POS, label riters,serial printers etc. It is suitable for remote access, retail and industrial applications, data collection and other applications requiring a High speed and or Low serial communications port. 

Connect a RS-232 Serial device to the USB port on your computer or Android tablet

Compatible with Windows 10, 8, 7, Vista, 2000, XP, 98, Apple MAC OS8 or higher, Linux 2.4.0 and later, OpenBSD 2.9 and later & FreeBSD 4.7 and later

Allows any PC to connect serial devices and programs that communicate through COM ports

6 feet cable with standard USB Type A Male to standard 9-pin DB9 RS-232 serial connector

PL-2303 Chipset for widest possible compatibility with Windows, Mac, Linux, and other platforms