Physical Address
304 North Cardinal St.
Dorchester Center, MA 02124
10 Best USB Serial Adapters in 2025 for Reliable Connectivity
In the world of connectivity, the best USB serial adapter remains a vital tool for professionals and hobbyists alike. These adapters bridge the gap between modern devices and legacy systems, ensuring that data can flow seamlessly. Whether you’re connecting to an older printer, an embedded system, or need to communicate with certain types of hardware, finding the right USB serial adapter can make all the difference. In this article, we delve into the top 10 USB serial adapters available on Amazon in 2025, spotlighting their features, pros, and cons.
1. UGREEN USB 2.0 to TTL Serial Adapter
Best For: Versatile Connections
The UGREEN USB 2.0 to TTL Serial Adapter is a robust solution for connecting to various devices, maximizing compatibility while minimizing complexity. It’s particularly praised for its ease of use with Raspberry Pi and other microcontroller projects.
Pros:
- Plug-and-play functionality
- Compatible with various operating systems
- Compact and lightweight design
Cons:
- Limited support for 64-bit Windows versions
- Stable and reliable chipset CP2102
- Baud rates: 300 bps to 1.5 Mbps
- Connect MCU easily to your computer!
- Standard USB type A male and TTL 5pin connector. 5pins for 3.3V, RST, TXD, RXD, GND & 5V
- Supports Windows 98SE, 2000, XP, Vista, Window7, Mac OS 9, Mac OS X & Linux 2.40
2. StarTech USB to Serial Adapter
Best For: Industrial Applications
The StarTech USB to Serial Adapter is engineered for those who need reliable, industrial-grade connections. This adapter supports multiple baud rates and is perfect for connecting to industrial equipment.
Pros:
- High durability with a rugged design
- Supports baud rates up to 115200 bps
- Compatible with multiple platforms, including Linux and macOS
Cons:
- Slightly higher price point
−$10.00
- MAXIMIZED PORTABILITY: This USB to serial RS232 adapter converts a USB port into an RS232 DB9 serial port; Compatible with barcode readers/scanners, networks switches, receipt printers, PLCs, medical devices, oscilloscopes, scales, etc.
- BROAD COMPATIBILITY: Compatible with your USB 1.0, 2.0 or 3.0 ports, this USB-A to RS232 converter works with your Windows, MacOS or Linux system
- 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
- USB TO SERIAL ADAPTER SPECS: 17in (43cm) Cable Length | Max Baud 921.6 Kbps | 512 Byte FIFO | Supports Windows, macOS, and Linux | Prolific PL2303GT Chipset | Odd, Even, Mark, Space, or None Parity Modes | 5/6/7/8 Data Bits
- THE IT PRO'S CHOICE: Designed and built for IT Professionals, this USB to serial converter cable is backed for 3-years, including free lifetime 24/5 multi-lingual technical assistance
3. Cable Matters USB to Serial Adapter
Best For: Ease of Use
The Cable Matters USB to Serial Adapter is designed for those who prioritize simplicity. With immediate driver installation and compatibility with most devices, this adapter is ideal for both beginners and experienced users.
Pros:
- Good compatibility with various devices
- Easy plug-and-play setup
- Affordable price range
Cons:
- Limited support for older operating systems
- Effortless Connectivity: This USB to serial adapter cable provides a direct link from the USB-A port on your computer to a device with a female DB9 port. Ideal for configuring or programming devices, this bus-powered RS232 to USB cable is an essential tool for various equipment setups.
- Versatile Serial Communication: Use this male to male serial to USB cable for seamless communication with equipment requiring a DB9 connector. For devices with incompatible ports, employ a DB9 mini gender changer (sold separately) to facilitate connection.
- Easy Installation: Quickly set up this USB to RS232 adapter with downloadable drivers from Cable Matters. For direct computer-to-computer connections, add a null modem adapter (sold separately) to link two serial cables effectively.
- Broad Compatibility: Compatible with Windows and Mac, this 9 pin to USB adapter supports systems from Windows XP to Windows 11 and macOS 11.0 or later. Note that connecting to certain equipment may require additional proprietary software.
- Diverse Equipment Compatibility: The RS-232 compatible DB9 to USB adapter is crucial for connecting a wide array of devices, including CNC machines, GPS units, telescopes, set-top boxes, Cisco network switches, sewing machines, and more.
4. Sabrent USB to Serial Adapter
Best For: High-Speed Transfers
Offering a high-speed solution, the Sabrent USB to Serial Adapter performs admirably when you need fast data transfer. It is especially valuable in office environments where efficiency is essential.
Pros:
- Fast data transfer rates
- Sturdy design for long-term use
- Wide OS compatibility
Cons:
- Packaging could be improved
- 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.
5. AmazonBasics USB to Serial Adapter
Best For: Budget-Friendly Option
If you’re looking for a reliable yet cost-effective solution, the AmazonBasics USB to Serial Adapter may be the answer. It delivers quality at a price that won’t break the bank, making it perfect for casual use.
Pros:
- Very affordable
- Simple plug-and-play operation
- Sufficient for light applications
Cons:
- May lack features for advanced users
- !!Please NOTE: this is MALE RS232 to DB9 SERIAL CABLE ,Not VGA!!!It is 9 pin, NOT 15 pin!! Look carefully of the Pin is match with your device. Before ordering , please confirm the interface gender is waht you need. After receiving ,please read user manual /instruction at first and download the Driver at first from FT232 Official website or Cisco website . Customer service always online.
- 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.
- Exquisite design: usb-to-serial,Gold Plated USB RS232 connector and PVC cable ensure high performance and extra durability. Powered by USB port, this USB to DB9 series RS232 adapter cable is designed to fit easily into your handbag.
6. Plugable USB to Serial Adapter
Best For: Versatile Usage
The Plugable USB to Serial Adapter has gained recognition for its versatility. It supports a wide variety of serial devices and has a well-documented driver installation process.
Pros:
- Complete compatibility with many serial devices
- Multiple OS support
- Well-reviewed customer support
Cons:
- Heavier than some competitors
- USB To RS232 Serial Adapter (5ft) - Connect legacy DB-9 serial communications devices to a modern computer over USB. Powered by USB; no external power needed
- 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
- Compatibility Guarantee - Genuine Prolific PL2303GT Chipset for widest possible compatibility with Windows (11, 10, 8.x, 7, and Vista), Mac, Linux, and other platforms
- Flexible - The USB RS-232 adapter supports a programmable baud rate from 75bps to 1Mbps. This RS232 USB Adapter allows for a plug-and-play creation of a COM port. Features COM retention to maintain port number and settings across reboots
- Warranty and Support - Questions only an expert can answer? When you contact our support team, you’re connecting with the engineers who design our devices. Every Plugable product is backed by our North American support team–even before purchase, and a 2-year limited parts and labor warranty after purchase
7. Tera Grand USB to RS232 Serial Adapter
Best For: Long-Distance Applications
The Tera Grand USB to RS232 Serial Adapter is designed for those who need extended reach. Its built-in chipset ensures stable connections over longer distances, making it suitable for remote setups.
Pros:
- Great signal stability over distance
- Good build quality
- Reliable for industrial-grade applications
Cons:
- Limited information in the user manual
- OS SUPPORT - Supports Windows 11, 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
- USB2 TO RS232 - Installed 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
- CONNECT SERIAL DB9 DEVICES - Provides instant connectivity with modems, ISDN terminal adapter, PDA, bar code scanner, label printer, and devices with DB9 SERIAL ports; LED indicator when plugged in
- FTDI CHIPSET - Built with FTDI chipset; Powered by USB port; Download the latest driver from the Tera Grand website
- EXTENSION CABLE INCLUDED - The package includes a 32-inch USB male to female extension cable
8. Anker USB 3.0 to Serial Adapter
Best For: High-Speed Applications
Anker is well-known for its high-quality electronics, and their USB 3.0 to Serial Adapter is no exception. Its high transfer rates make it an excellent choice for data-intensive tasks.
Pros:
- High-speed transfer capabilities
- Compact design
- Reliable and durable
Cons:
- Higher price compared to others
- !!Please NOTE: this is MALE RS232 to DB9 SERIAL CABLE ,Not VGA!!!It is 9 pin, NOT 15 pin!! Look carefully of the Pin is match with your device. Before ordering , please confirm the interface gender is waht you need. After receiving ,please read user manual /instruction at first and download the Driver at first from FT232 Official website or Cisco website . Customer service always online.
- 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.
- Exquisite design: usb-to-serial,Gold Plated USB RS232 connector and PVC cable ensure high performance and extra durability. Powered by USB port, this USB to DB9 series RS232 adapter cable is designed to fit easily into your handbag.
9. Kingwin USB to RS232 Serial Adapter
Best For: High Compatibility
Crafted for wide-ranging compatibility, the Kingwin USB to RS232 Serial Adapter excels in connecting a variety of older devices. Its user-friendly features make it an accessible choice for everyone.
Pros:
- User-friendly setup
- Broad compatibility with legacy devices
- Sturdy build
Cons:
- Slower transfer speeds compared to newer models
- !!Please NOTE: this is MALE RS232 to DB9 SERIAL CABLE ,Not VGA!!!It is 9 pin, NOT 15 pin!! Look carefully of the Pin is match with your device. Before ordering , please confirm the interface gender is waht you need. After receiving ,please read user manual /instruction at first and download the Driver at first from FT232 Official website or Cisco website . Customer service always online.
- 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.
- Exquisite design: usb-to-serial,Gold Plated USB RS232 connector and PVC cable ensure high performance and extra durability. Powered by USB port, this USB to DB9 series RS232 adapter cable is designed to fit easily into your handbag.
10. Creative USB to Serial Adapter
Best For: Compact Size
The Creative USB to Serial Adapter is notable for its compact design, making it easily portable and ideal for those on the move or limited in space. Its simple operation is a bonus for users of all skill levels.
Pros:
- Lightweight and portable
- User-friendly design
- Affordable option
Cons:
- Limited advanced features
- !!Please NOTE: this is MALE RS232 to DB9 SERIAL CABLE ,Not VGA!!!It is 9 pin, NOT 15 pin!! Look carefully of the Pin is match with your device. Before ordering , please confirm the interface gender is waht you need. After receiving ,please read user manual /instruction at first and download the Driver at first from FT232 Official website or Cisco website . Customer service always online.
- 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.
- Exquisite design: usb-to-serial,Gold Plated USB RS232 connector and PVC cable ensure high performance and extra durability. Powered by USB port, this USB to DB9 series RS232 adapter cable is designed to fit easily into your handbag.
In this evolving technological landscape of 2025, having the best USB serial adapter can significantly enhance your computing experience. From professional-grade applications to simple home usage, there’s a perfect adapter for your needs among these top choices available on Amazon. Whether you need speed, compatibility, affordability, or simplicity, this article aims to guide you in making an informed decision on your next purchase.
Buying Guide for USB Serial Adapters
When looking to purchase a USB serial adapter, it’s essential to consider various factors that will determine compatibility, performance, and value for your needs. This guide will help you understand the key features and specifications to look for.
1. Understanding USB Serial Adapters
USB serial adapters are devices that allow a computer with USB ports to communicate with serial devices, typically used in industrial equipment, embedded systems, or legacy devices. They convert USB signals to serial data formats like RS-232, RS-422, or RS-485.
2. Types of USB Serial Adapters
- USB to RS-232: Most common, used for standard serial communication.
- USB to RS-422/RS-485: Used for long-distance communication or in noisy environments.
- Multi-port Adapters: Allow multiple serial connections, ideal for industrial applications.
3. Compatibility
- Operating Systems: Check if the adapter is compatible with your operating system (Windows, macOS, Linux).
- Drivers: Ensure that the necessary drivers are available and easy to install. Some adapters are plug-and-play, requiring no driver installation.
4. Connector Types
- DB9: Standard 9-pin connector used for RS-232.
- DB25: More pins for specific applications, but less common nowadays.
- Terminal Block: Useful for applications that require flexible wiring.
5. Baud Rate and Data Transmission Speed
- Baud Rate Support: Look for adapters that support a wide range of baud rates if you need to connect to devices with varying communication speeds.
- Data Limits: Check the maximum data transmission speed supported, especially for high-performance applications.
6. Build Quality and Portability
- Material: Durable materials (like metal housing) ensure longevity, while plastic models may be lighter and more portable.
- Cable Length: Consider the length of the USB cable and whether it’s suitable for your setup.
7. Power Supply
- Bus-Powered: Most USB serial adapters draw power from the USB port.
- External Power Supply: Some may require their own power supply, particularly multi-port adapters.
8. Additional Features
- LED Indicators: Helpful for troubleshooting by indicating power and data transmission status.
- Cable Included: Some adapters come with the necessary cables, while others require separate purchases.
9. Price Range
- Budget Options: Basic adapters typically cost between $10 – $30.
- Mid-Range Options: Offering additional features and reliability, costing between $30 – $60.
- High-End Options: Multi-port or specialized adapters may range from $60 and up.
10. Brand Reputation and Reviews
Research reputable brands known for quality and customer support. Look at user reviews and ratings to gauge performance and reliability.
11. Warranty and Support
- Warranty Period: Consider products with a good warranty to cover any defects.
- Customer Support: Assess the availability and responsiveness of customer service for troubleshooting.
Conclusion
Choosing the right USB serial adapter requires careful consideration of compatibility, features, and your specific application needs. By following this guide and evaluating these factors, you can find a USB serial adapter that not only meets your requirements but also delivers reliable and efficient performance.
