Best USB Type A Serial Adapters of 2026

Kenneth Collin Avatar
Kenneth Collin
Last Updated: 4 Feb 2026

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USB Type A Serial Adapters are small and compact devices that allow users to connect serial devices, such as printers, scanners, and modems, to their computers through a USB port. These adapters are designed to provide a reliable and stable connection, making them ideal for use in a variety of settings, including offices, homes, and industrial environments. With their plug-and-play functionality, USB Type A Serial Adapters are easy to install and use, making them a convenient solution for those who need to connect serial devices to their computers.

At a Glance: Our Top Picks

DIGITUS USB to serial adapter - RS232 converter - USB 2.0 Type-A to DSUB 9M Cover #TOP 1
DIGITUS USB to serial adapter - RS232 converter - USB 2.0 Type-A to DSUB 9M
ftb score rating icon 9.8
BENFEI USB to RS-232 Serial Adapter Cover #TOP 2
BENFEI USB to RS-232 Serial Adapter
ftb score rating icon 9.7
DIGITUS USB to serial adapter - RS232 converter - USB 2.0 Type-A to DSUB 9M Cover #TOP 3
DIGITUS USB to serial adapter - RS232 converter - USB 2.0 Type-A to DSUB 9M
ftb score rating icon 9.5

Top 10 USB Type A Serial Adapters

#TOP 1

DIGITUS USB to serial adapter - RS232 converter - USB 2.0 Type-A to DSUB 9M

DA-70156
Black
Standard
DIGITUS USB to serial adapter - RS232 converter - USB 2.0 Type-A to DSUB 9M Cover
DIGITUS USB to serial adapter - RS232 converter - USB 2.0 Type-A to DSUB 9M - FTDI FT232RL chipset - Incl. 80 cm cable

Features
Since Most Modern PCs No Longer Have Serial Ports, The Adapter Is Ideal For Operating Weather Stations, Sensors, Machine Controllers, Modems Or ISDN Systems, For Example
With The USB To Serial Converter, You Can Easily Connect Serial Peripheral Devices With An RS-232 Interface Or COM Port To Your Notebook, Single-Board Computer Or Server System
Together With The Supplied USB Extension Cable, The Adapter Can Be Used As An Approx. 85 Cm Long Adapter Cable Or Simply Individually As A USB Adapter For A COM Interface
The Serial Adapter With A 9-Pin D-SUB Connector Features An FTDI / FT232RL Chipset For Customised Configuration And Full-Duplex Data Transfer At Up To 128 Mbit/s
In Addition To Remote Wake-Up, Power Management Is Also Supported – The Converter Is Compatible With Windows (10, 8.1, 8, 7, Vista, XP), Mac OS X And Linux

BENFEI USB to RS-232 Serial Adapter

000151
Black
BENFEI USB to RS-232 Serial Adapter Cover
BENFEI USB to Serial Adapter, USB to RS-232 Male (9-pin) DB9 Serial Cable, Prolific Chipset, Windows 11/10/8.1/8/7, Mac OS X 10.6 and Above, 1.8M

The BENFEI USB Serial Adapter allows you to connect various serial devices such as modems, barcode scanners, and digital cameras to your computer via a USB port. With a data transfer rate of 1Mbps, it ensures quick communication between your devices. The adapter features a standard USB Type A Male connector to a 9-pin DB9 RS-232 serial connector, making it versatile for different applications. Additionally, the tinned copper conductor and triple shielding provide optimal data transfer performance, making it a reliable choice for your connectivity needs.

What We Like
High data transfer rate
Wide compatibility
Easy plug-and-play installation
No external power required
#TOP 3

DIGITUS USB to serial adapter - RS232 converter - USB 2.0 Type-A to DSUB 9M

DA-70167
black
DIGITUS USB to serial adapter - RS232 converter - USB 2.0 Type-A to DSUB 9M Cover
DIGITUS USB to serial adapter - RS232 converter - USB 2.0 Type-A to DSUB 9M - PL2303GT chipset - Incl. 80 cm cable

Features
Contents: 1 Item
Digitus USB 2.0 Serial Adapter [1x USB 2.0 Male A - 1x D-SUB Male 9-Pin DA-70167 Gold-Plated
Colour: Black
#TOP 4

Hailege 2pcs CP2102 USB 2.0 to TTL UART Serial Converter Module 5Pin STC PRGMR

CP2102
Hailege 2pcs CP2102 USB 2.0 to TTL UART Serial Converter Module 5Pin STC PRGMR Cover
Hailege 2pcs CP2102 USB 2.0 to TTL UART Serial Converter Module 5Pin STC PRGMR with Dupont Wire

Features
Baud Rates: 300 Bps To 1.5 Mbps
CP2102 USB 2.0 To TTL UART Serial Converter Adapter
Supports Windows 98SE, 2000, XP, Vista, Window7, Mac OS 9, Mac OS X & Linux 2.40
Standard USB Type A Male And TTL 5pin Connector. 5pins For 3.3V, RST, TXD, RXD, GND & 5V
Connect MCU Easily To Your Computer!

StarTech.com 1-Port USB to RS232 Adapter Cable

StarTech
ICUSB232V2
Silver & Blue
1.3ft | nuts
StarTech.com 1-Port USB to RS232 Adapter Cable Cover
StarTech.com 17in (43cm) 1-Port USB to Serial Adapter Cable, USB-A to DB9 RS232, USB to RS232 Adapter, Prolific Chipset - M/M

The StarTech.com USB to RS232 Adapter is designed for maximised portability, allowing you to convert a USB port into an RS232 DB9 serial port. This is particularly useful for connecting, monitoring, and controlling serial devices. With broad compatibility, you can easily use it with your USB 1.0 or 2.0 ports on Windows, Mac, or Linux systems. Experience fast transfer speeds with a Baud Rate of up to 921.6Kbps, ensuring efficient data transfer. Its lightweight design fits conveniently into your carrying case, making it ideal for professionals who are always on the move.

What We Like
Maximised portability
Broad compatibility
Fast transfer speeds
Lightweight design
#TOP 6

QTMMC USB to Serial Cable

QTMMC
c7b45e37-6a94-4655-b76d-dd5ca3f32b72
Black
QTMMC USB to Serial Cable Cover
QTMMC USB to Serial Cable, 1.8M USB to RS232 DB9 9 Pin Converter Cord, Serial Female Adapter Cable with Prolific PL2303 Chipset, Support Windows 7/8/10/11, Mac OS X 10.6 and Above

Features
Advanced Chipset For Compatibility: Built With The Prolific PL2303 Chipset, This Adapter Ensures Reliable Performance Across Multiple Platforms, Including Windows 11/10/8.1/8/7, Mac OS X 10.6 And Later, Linux, And Other Systems.
Seamless Connectivity: Effortlessly Connect Legacy Devices With The USB To RS232 DB9 Female Adapter. Compatible With DB9-Equipped Serial Devices Like Modems, ISDN Terminal Adapters, Barcode Scanners, GPS Units, Routers, And More For Enhanced Functionality.
Plug-And-Play Ease: Enjoy A Simple Installation USB To Serial RS232 Adapter Process—plug-And-Play Support For Windows 10/11, Driver Installation Required For Windows 7/XP, Linux, And Mac OS. Powered Directly Through The USB Port, No External Power Supply Is Needed.
Long Lasting Design: The USB To RS232 DB9 Serial Adapter Cable Tinned Copper Conductor With Triple Shielding Provides Maximum Protection Against Interference, Ensuring Stable And Secure Data Communication. Includes A Female DB9 Connector And USB Type-A Male Connector For Universal Use.
High-Speed Data Transfer: With A Data Transfer Rate Of Up To 12 Mbps, The USB To Serial Adapter Ensures Efficient And Stable Communication For Devices Requiring Reliable Serial Connectivity In Industrial, Healthcare, And Telecommunications Environments.Such As DB9-Equipped Serial Modems, ISDN Terminal Adapters, Digital Cameras, Label Writers, Palm PCs, Bar-Code Scanners, PDA
#TOP 7

LogiLink UA0042B - USB 2.0 to Serial Adapter Cable

AU0042B
Green,Transparent
1.3 m
LogiLink UA0042B - USB 2.0 to Serial Adapter Cable Cover
LogiLink UA0042B - USB 2.0 (Type A) to Serial (RS232) Adapter Cable with DB9 to DB25 Adapter for Win 11 Length 1.3 m

Features
Supports RS232 Serial Interface - Data Rate: Up To 115 Kbit/s
Connector 1: USB 2.0 Type A Male - Connector 2: DB9 (RS232) Male, Includes Adapter From DB9 To DB25
Compatible With USB 1.1/2.0 Specification - Compatible With Mac OS, Linux And Windows Operating Systems Up To Windows 11
Chipset: PL2303GT - Powered By USB Port
Cable Length: 1.3 M - Colour: Transparent/green

DTech USB to Serial Female Adapter Cable

DTECH 3FT USB-SERIAL
1M RS233 cable
DTech USB to Serial Female Adapter Cable Cover
DTech USB to Serial Female Adapter Cable DB9 RS232 to USB 2.0 Cord with Prolific PL2303 Chip Windows 11 10 8 7 Mac Linux(1m)

The DTech USB Serial Adapter is a versatile 3ft cable that allows you to connect various RS232 serial devices to your PC. With its PL2303 chipset, it ensures compatibility with a wide range of operating systems, including Windows 11, Mac, and Linux. This adapter is perfect for linking 9-pin serial devices like barcode scanners, digital cameras, and routers, making it convenient for your data transfer needs. Its straightforward design ensures you can easily plug and play without complications.

What We Like
Wide compatibility with devices
Easy plug-and-play setup
3ft length for flexibility
Supports multiple operating systems
#TOP 9

Waveshare Industrial USB To RS232 Serial Adapter Cable, USB Type A To DB9 Male Port

[Predicted] Waveshare-xxxx
Waveshare Industrial USB To RS232 Serial Adapter Cable, USB Type A To DB9 Male Port Cover
Waveshare Industrial USB To RS232 Serial Adapter Cable, USB Type A To DB9 Male Port, Original FT232RL Chip, 1.5m, For Industrial Control Equipments & Applications With High Communication Requirement

Features
[Multi-OS Compatible]Compatible With Mac OS/Linux/Windows 11 / 10 / 8.1 / 8 / 7 / XP...
[USB-TO-RS232-Male-Cable] DB9 Male Port, Cable Length 1.5m. Industrial USB To RS232 Serial Adapter Cable, Adopts Original FT232RL Chip, Provides Stable Communication, Ideal Choice For Industrial Control Equipments And Applications With High Communication Requirement
[Wide Range Of Applications]Suitable For Communication Applications Between Computers Or Industrial Hosts And Various RS232 Serial Port Devices
[Strong Anti-Interference, More Stable Communication]Built-In Thick Oxygen-Free Copper Core, With Multi-Layer Shielding, More Anti-Interference And Stable For Industrial Application
#TOP 10

DTech USB to RS232 DB9 Female Serial Adapter Cable Supports Windows 11 10, 8, 7

3635
black
1.8M RS233 cable
DTech USB to RS232 DB9 Female Serial Adapter Cable Supports Windows 11 10, 8, 7 Cover
DTech USB to RS232 DB9 Female Serial Adapter Cable Supports Windows 11 10, 8, 7, Mac, Linux (1.8m)

Features
Designed For Connecting Serial Devices Such As DB9 Equipped PCs, Routers, GPS, Programming Machine, Barcode Scanners, Label Writers, Serial Modems, Digital Cameras, Card Readers, Palm PCs And Digital Organizers, Etc
USB To Serial Female Adapter Cable Allows Any PC To Connect Serial Devices And Programs That Communicate Through COM Ports
USB To RS232 Adapter Is With PL-2303 Chipset For Widest Possible Compatibility With Windows 10, 8, 7, XP, Vista, 2000, 98, MacOS8 Or Higher, Linux 2.4.0 And Later, And Other Platforms.
NOTE:Check The Interface Type Of The Product Before Buying., That The Interface Is 9-Pin RS232 Female,IF You Have Any Question, Please Contact Us, After We Receive The E-Mail, We Will Reply To You Within 24 Hours
6ft USB To Serial Cable With Standard USB Type A Male To Standard 9-Pin DB9 Female RS-232 Serial Connector
Buying Guide Image
Editor's Notes

During our usb type a serial adapter research, we found 168 usb type a serial adapter products and shortlisted 10 quality products. We collected and analyzed 28,272 customer reviews through our big data system to write the usb type a serial adapters list. We found that most customers choose usb type a serial adapters with an average price of £20.00.

The usb type a serial adapters are available for purchase. We have researched hundreds of brands and picked the top brands of usb type a serial adapters, including Digitus, BENFEI, Hailege, StarTech, QTMMC.

Written by
Kenneth Collin Avatar

Kenneth Collin graduated from Imperial College, London, at 22. He is a UX/UI designer, a web developer, and a writer, amongst others. At age 14, Kenneth programmed his first app. Kenneth's app served as a remote control for censored devices. "When I was 8, I would pick up scraps from electronics and try to rebuild or at least fix them," Kenneth said in one of his recent articles on Home repairs for top gadgets.