Best Serial Adapters 2026

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Last Updated - 03.02.2026

Best Choice

01

CableDeconn

CableDeconn USB to RS232 Adapter with Prolific PL2303 Chipset 6ft 2m USB 2.0 Male to RS 232 DB9 Serial Male with Connector Female Cable for Windows XP,Windows Vista,7,8,10,Mac OS Linux

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9.8

Exceptional

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

USB2.0 to RS232 Male DB9 Serial Cable with RS232 Female Converter,Connect USB Port on your Computer to your RS232 DP 9Pin Devices,USB Port is available with 1Mbbps date transfer rate
Simple installation, plug and play, uses latest prolific PL2303 chipset, supports Windows 10/8.1/8/7/Vista/XP//2000 /Linux 2.4 or above /and Mac OS X 10.6 and above
Easy Connectivity,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.Please note that not compatible with Cutting plotter,SCM
Driver for the first time use,please find the driver at our CableDeconn official site or in the Package to download driver to ensure you can use this adapter normally
CableDeconn supports lifetime warranty and customer services,if you have any questions about using our Adapter,CableDeconn will Provides with you Technical Support within 24 Hours

15,59 €
02

DIGITUS

Digitus 9m USB 2.0 to DSUB Serial Converter

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9.6

Exceptional

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

With the USB to Serial Converter you can easily connect serial peripheral devices with RS-232 interface or COM port to your notebook, single-platform computer or server system.
Together with the included USB extension cable, the adapter can be used as approx. 85 cm long adapter cable or simply used 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 individual configuration and full duplex data transfer at up to 128 Mbps.
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.
As today's PCs usually no longer have serial ports, the adapter is ideal for operating e.g. weather stations, sensors, machine controls, modems or ISDN systems.

14,01 €
Value for Money

03

UGREEN

UGREEN 20210 USB Serial Cable, USB to RS232 DB9 9 pin Converter Cable 1m for Connecting Cisco Routers and Switches,Celestron Telescope Nexstar hand Controller and Extron and Crestron Products, Support Windows 10/8/7/Vista/XP/2000 and Mac OS X 10.6 to 10.11 EI Capitan with PL2303 Chipset

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9.4

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Wide compatibility: With the PL2303 chipset, the serial to USB adapter supports Windows 11/ 10/ 8.1/ 8/ 7/ Vista/ XP/ 2000, Mac OS X 10.6 and more.
STRONG AND DURABLE Designed to withstand over 10,000 insertions and 10,000 bends, plugging and unplugging devices without worry. The ports match the device ports exactly to prevent premature disconnection.
RS232 USB adapter: the USB serial cable helps you connect serial devices such as serial DB9 devices. It allows any computer, serial devices (RS232, DB9) such as PCs, routers, GPS, barcode scanners, barcode machines, serial modems, digital cameras, card readers, PDAs, mobile phones, PDAs/ISDN terminal adapters to connect via the USB port.
High-quality materials: the USB DB9 cable consists of multiple shielding and provides better protection against interference. Tinned copper wires and gold-plated connectors ensure good conductivity.
Excellent Performance Built-in PL2303 chip ensures more stable and reliable transmission. The transfer rate is between 75-115200 bps. The USB serial adapter supports null modems. You can configure COM ports in Device Manager. It is also able to detect suspend USB.

10,63 €
04

AZDelivery

AZDelivery ⭐⭐⭐⭐⭐ FTDI Serial Adapter FT232RL USB to TTL 3.3V 5.5V Module Mini Port for Arduino and Raspberry Pi

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9.2

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

With the free eBook from AZ-Delivery, you can get started directly with your project without having to deal with the setup of the product for a long time.
This product contains an e-book that contains useful information about the beginning of your project, it helps with a quick setup and saves time in the configuration process. We offer a range of application examples, complete installation guides and libraries.
The USB serial adapter is one of the most used converters on the market. This is due to the fact that a signed driver is stored with Microsoft, which installs itself via Windows Update after connecting the module.
No additional drivers are required for the AZDelivery FT232-AZ adapter and the logic level can be adjusted via the jumpers on the board. Even when used with Linux, the AZDelivery Converter is very popular.
AZDelivery adapter compatible with FT232RL USB to TTL serial for 3.3 V and 5 V.

6,99 €
05

BENFEI

BENFEI USB to RS232 Serial Cable with Nut 1.8 m, Serial USB to RS-232 (9 Pin) DB9 with PL2303 Prolific Chipset, Compatible with Windows 11/10/8.1/8/7, Mac OS X 10.6 and above (Not VGA)

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9.1

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Wide compatibility: the USB to RS232 adapter is equipped with the Prolific PL-2303 chipset for maximum compatibility with Windows 11, 10, 8, 7, XP, Vista, 2000, 98, MacOS8 or higher, Linux 2.4.0 and above and other platforms;
HOW IT WORKS: BENFEI USB to RS232 DB9 serial connector is designed to connect to serial devices such as DB9 equipped serial modems, ISDN terminal adapters, digital cameras, label writers, palm PCs, barcode scanners, PDAs, etc. via a USB port with 1 Mbps data transfer rate;
Conductor & shielding: tinned copper conductor (wire thickness No. 24 No. 28) and triple shielding ensure the best data transfer rate. Powered by USB port, no external power supply required. Easy installation, plug and play after a single driver installation;
CONNECTORS: With standard USB Type A male to standard DB9-RS-232 9 pin serial male; Note that it is not the USB to VGA (DB15) solution that cannot mirror video/audio to an external monitor. It is the USB to DB9 solution;
18 MONTHS WARRANTY: Exclusive 18-month unconditional BENFEI warranty ensures long-term satisfaction with your purchase; Friendly and easy to reach customer service to solve your problems in time.

9,99 €
06

DIGITUS

Digitus 70166 USB Type C Serial Adaptor, Black

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9.0

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

With the USB-C to Serial Converter you can easily connect serial peripheral devices with RS-232 interface or COM port to your notebook, ultrabook or Mac book.
Together with the included USB extension cable, the adapter can be used as approx. 85 cm long adapter cable or simply used 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 individual configuration and full duplex data transfer at up to 128 Mbps.
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.
As today's PCs usually no longer have serial ports, the adapter is ideal for operating e.g. weather stations, sensors, machine controls, modems or ISDN systems.

12,86 €
07

DIGITUS

DIGITUS USB to Serial Adapter - RS232 Converter - USB 2.0 Type-A to DSUB 9M - PL2303GT Chipset - Includes 80cm Cable

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8.9

Very Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

With the USB-C to Serial Converter you can easily connect serial peripheral devices with RS-232 interface or COM port to your notebook, ultrabook or Mac book
Together with the included USB extension cable, the RS-232 adapter can be used as approx. 80 cm long adapter cable or simply used individually as a USB adapter for a COM interface
The serial adapter with a 9-pin D-SUB connector has a PL2303GT chipset for individual configuration and full duplex data transfer at up to 128 Mbps
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
As today's PCs usually no longer have serial ports, the adapter is ideal for the operation of e.g. weather stations, sensors, machine controls, modems or ISDN systems

9,19 €
08

iHaospace

Ihaospace FTDI FT232RL USB to TTL Serial Converter Adapter Module Serial 3.3 V and 5 V for Arduino

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8.8

Very Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

With 500mA resettable fuse, RXD/TXD send/receive communication indicator
USB to TTL Converter Breakout Board: From a stability point of view, the FT232 series is the most reliable and can be used for program diagnostics without fear of blue screens.
Operating voltage: 3.3 V - 5 V
Not compatible with Windows 8
Compatible with Win95/98/98se/ME/2000/XP/Win7 32-bit/64-bit/Vista

4,99 €
09

AZDelivery

AZDelivery USB TTL Adapter 3.3 V or 5 V with CH340G and 20 cm Jumper Cable

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8.5

Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

This product contains an e-book that contains useful information about the beginning of your project, it helps with a quick setup and saves time in the configuration process. We offer a range of application examples, complete installation guides and libraries.
Safe operation: no risk of damaging a USB port, in case of surge the USB adapter is protected by a fuse
Ready to use: no manual installation of the drivers required, the widely used CH340G chip is installed on the adapter
Easy to use: microcontrollers can be controlled with 3.3 V and 5 V, a bridge allows you to easily change the voltage and the logic level
Direct connection: help with damaged microcontrollers, if communication via USB is no longer possible, you can communicate directly with the chip with the adapter

6,49 €
10

QIQIAZI

FTDI 232RL Mini USB to TTL Adapter, QIQIAZI 3.3V 5V FTDI 232RL Adapter USB to TTL Serial Module Compatible with Arduino (2 PCS)

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8.2

Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

【Extended Compatibility】: 232RL FTDI Mini USB to TTL Serial Converter Adapter FTDI USB adapter supports a variety of operating systems, including Win95, 98, 98se, ME, 2000, XP, Win7 32bit/64bit and Vista. Does not support Win8.
【Advanced USB Port Design】: Use the best USB 2.0 chip to convert USB to serial, powered by USB and an interface with optional levels of 5V or 3.3V, you can supply target voltages directly to the VCC and GND pins for other level requirements.
Product parameters: FTDI mini USB to TTL module FTDI USB adapter converter operating voltage: 3.3 V/5.5 V; size: 36.5 x 18 mm; colour: red. Includes 500mA self healing fuse for added protection.
Cost-effective USB interface: The FT-232RL-FTDI USB adapter offers a cost-effective way to add USB functions to Arduino or other microcontrollers. It is perfect for bootloading or downloading sketches on breadboards.
Communication display: FTDI USB adapter 232RL FTDI mini USB to TTL serial converter adapter module equipped with RXD/TXD communication display, this module ensures visual monitoring of the status of transmission and reception of data.

7,59 €