10 Best Usb To Serial Adapter of December 2025

• Provides the connection between USB and the traditional RS-232 serial port
• Supported OS: Windows 2000/ME/98SE, Windows XP (32/64-bit), Windows Vista (32/64-bit), Windows 7 (32/64-bit), Windows 8/8.1 (32/64-bit), Windows 10 and higher (32/64-bit), Mac OS X 10.6 and Above, Linux 2.4 or above
• Easy to setup: Plug & Play - Simply plug your device into the adapter and the adapter into your PC or Mac.
• COM ports and Baud rates can be modified to desired set up.
• This product comes with LIFETIME manufacturer warranty.

Sabrent

• 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
• DB9 serial port supports data transfer rates up to 230 Kbps:twice the speed of a standard built-in serial port
• LED shows adapter status and data activity at a glance

Tripp Lite

• Interface: USB - 1.1 Type A RS-232 (9-pin) Male, Cable Length: 5 feet
• Supported OS: WINDOWS 10/8.1/8, Windows 7 (32/64-bit)/Vista (32/64-bit)/XP(32/64-bit)/ 2000/ME/98SE Mac OS 10.1~10.6.
• Install as a standard Windows COM port, full RS-232 modem control signals, RS-232 data signals, TxD, RxD, RTS, CTS, DSR, DTR, DCD, RI, GND. The item is a USB to RS-232(DB9) solution. It's not for the USB to VGA(DB15) solution.
• 28/24 AWG Cable Gauge with 500kbps Data Rate.
• Easy Plug and Play installation with 2-years limited warranty.

BENFEI

• CONNECT AND ADAPT: The RS232 adapter cable with FTDI chipset and COM Retention converts an available USB 1.1 or 2.0 port into an RS232 serial DB9 port to monitor and control your serial devices.
• BUILT-IN CONVENIENCE: This adapter with COM retention, allows the same COM port value to automatically be re-assigned to the port if the cable is disconnected and re-connected to the host computer.
• HIGHLY CUSTOMIZABLE: The adapter cable uses the FTDI chipset which supports additional customization and offers extensive compatibility - making it the ideal solution for any setup.
• BROAD COMPATIBILITY: The FTDI chipset supports additional customization and advanced features. Compatible with Windows, Windows CE, Mac OS and Linux, makes this product easy to integrate.
• THE STARTECH.COM ADVANTAGE: StarTech.com offers a 2-year warranty and free lifetime technical support on this adapter cable and has been the choice of IT professionals and businesses since 1995.

StarTech

• USB: The USB to serial adapter supports USB 1.1 and it is compatible with USB 2.0 and USB 3.0 ports.
• RS-232 SERIAL CONNECTOR: Connect RS-232 serial devices, such as modems or printers, using the widely supported USB standard found in most laptops and desktops today.
• SUPPORTED OPERATING SYSTEMS: The USB to serial converter adapter is compatible with Windows and Mac operating systems. Windows 10, 8.1, 8, 7. Mac OS 10.11, 10.10, 10.9, 10.8, 10.7, 10.6
• FLEXIBLE CABLE: Integrated and flexible 540mm (21 in.) USB 2.0 cable accommodates most installation scenarios. Total cable length of 25 inches when including the RS-232 (9pin) and USB Type A.
• EASY SETUP: Simple installation in seconds of the USB to Serial 9-Pin Converter Cable. Insert the your computer

TRENDnet

• Allows any PC to connect serial devices and programs that communicate through COM ports
• 24-inch 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 (10/8.1/8/7/Vista/XP), Mac, Linux, and other platforms
• 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
• We love our Plugable products and hope you will too. All of our products are backed with a 1-year limited parts and labor warranty and Seattle-based email support

Plugable

• Replaces RS232 (DB-25/DB-9) serial port perfectly, connects to any laptop/PC's USB port directly to a console port like a charm. No more RS232 Female and male adapters; Note: This is Not a USB Ethernet Cable.
• An essential accessory of branded routers, switches, firewalls and wireless LAN controllers with CONSOLE port, such as Cisco, Ubiquiti, Juniper, Fortigate, Mikrotik, TP-Link, Huawei, HP ProCurve devices and more. Our unique cable works flawlessly and quickly on laptop and desktop computer
• Microsoft (HCL) certified to be compatible with Windows, no CD required for as the drivers are part of the OS distribution. If the drivers can't be automatically installed, please contact us at any time
• Full support for 32-bit and 64-bit Windows, MAC OS, Linux and Android, except Chrome OS. For details of OS compatibility, please scroll down this page and take a look at 'Product description'
• USB2.0 (1.1 compatible); CONSOLE's DTE Pinouts: RTS(1), DTR(2), TXD (3), GND(4), GND(5), RXD (6), DSR(7), CTS(8); so Moyina RJ45 cable is 1-CTS, 2-DSR, 3-RXD, 4-GND, 5-GND, 6-TXD, 7-DTR, 8-RTS. Cable length 1.8m/6ft, Maximum RS232 speed 500kbaud

Moyina

• MAXIMIZED PORTABILITY: This USB to serial RS232 adapter converts a USB port into an RS232 DB9 serial port to connect to, monitor, and control a serial device
• BROAD COMPATIBILITY: Compatible with your USB 1.0 or 2.0 ports, this USB to RS232 converter works with your Windows, Mac or Linux system
• FAST TRANSFER SPEEDS: Experience fast speeds with this USB to DB9 serial adapter, supporting a Baud Rate up to 921.6Kbps
• PORTABLE DESIGN: Powered by a USB port, this USB to RS232 serial adapter cable features a lightweight design that conveniently fits into your carrying case, making it ideal for professionals on the go
• RELIABLE SUPPORT: Backed by a 2-year StarTech.com warranty, this USB to serial converter cable comes with free lifetime technical support
• Install in almost any laptop or desktop computer through broad operating system compatibility, including Windows 8
• Communicate efficiently with connected devices with high-speed 921Kbps support
• Portable and lightweight, the USB-Powered design requires no additional power adapter
• USB to Straight-Through RS232 DB9 Serial Adapter
• High-speed 921.6Kbps Baud Rate
• Compatible with Windows 8, Mac OS X and Linux
• Compatible with USB 1.1 or higher ports
• USB-powered - no external power adapter required

StarTech

• DTECH USB to serial adapter FT232 cable allows your computer to make communication with serial devices equipped with 9 pin female RS232 interface
• USB to male serial port adapter is designed for connecting Serial devices such as DB9 equipped PC, router, GPS, Programming machine, barcode scanners, label writers, serial modem, digital camera, card reader, palm PCs and digital organizer, etc
• (FT232 chip) Long FTDI serial cable for Windows 10, 8, 7, Mac OS 8 or higher, Linux 2.4.0 and later
• The com port to usb converter is designed with a high performance quality processor chip (FT232RL), which makes this USB RS232 adapter one of the most reliable adapters on the market
• 10ft DB9 to USB adapter with 9 pin male to USB-A male gold plated connector uses crystal clear blue enrich injection, strong and beautiful; active pins: 2(RXD), 3(TDX), and 5(GND)

DTech

• Universal SATA/IDE Hard Drive Adapter: ABLEWE hard drive adapter is compatible with all 2.5“/3.5” SATAⅠⅡ Ⅲ /IDE HDD SSD; 2.5“/3.5” IDE HDD SSD; 5.25'' DVD-ROM, CD-ROM, CD-RW, DVD-RW, DVD+RW. This sata cable is a perfect solution for backup & processing IT data, batch processing data, formatting, file transfers etc
• Support up to 12TB: This hdd converter is compact body design, enables access to 1 drives and 3 USB 3.0 peripheral devices simultaneously.Support Plug and play & hot swap.No need to switch off your laptop while exchanging the connected hard disks.Tips: Some IDE hard drive is old, you need to set jumper to turn on the disk(set the master disk and the slave disk).
• Plug & Play: No need to install driver or install the SSD/HDD inside an enclosure, just plug and play. Hot-swap supported. Always eject the hard drive safely before unplug the adapter from your computer in case of data loss.
• Super Speed USB 3.0 & Wide Compatibility: Data transfer rates of up to 5Gbps (The actual transmission speed is limited by the setting of the device connected). Backward compatible with USB 2.0/1.1. Support Windows XP/Vista/7/ 8.1/ 8/10, Mac OS 10 or higher, Linux etc. Support devices PS4/Xbox/TV/monitoring equipment.
• Warranty & Package:12V 2A Power Adapter Included which guarantees enough power supply for 3.5" hard drive. ABLEWE provide 24 month warranty lifetime technical support for this item. Please be kindly noted that power supply is necessarily required if a 3.5" SATA HDD SSD is connected.

ABLEWE