Best Serial Adapters 2026

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Last Updated - 27.03.2026

Best Choice

01

Digitus

Digitus 9m USB 2.0 to DSUB Serial Converter

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9.7

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.

14,99 €
02

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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9.6

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

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

14,29 €
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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18% Off
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 € 12,99 €(18% Off off)
04

Logilink

LogiLink USB 2.0 (Type-A) to Serial (RS232-9pin) Adapter for Win 11

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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

Supports RS232 serial port - Data rate: up to 115 Kbps
Connector 1: USB 2.0 Type-A Male - Connector 2: DB9 (RS232) Male
Compatible with USB 1.1/2.0 specification - Compatible with Mac OS, Linux and Windows operating systems up to Windows 11
Colour: black
Chipset: PL2303GT - Powered by USB port

11,24 €
Value for Money

05

UGREEN

UGREEN USB to RS232, USB Serial Cable DB9 Converter for Cisco Routers and Switches, Celestron Telescope Nexstar hand Controller and Extron and Crestron Products, Support Windows 10 and Mac, 2m

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20% Off
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

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.

13,59 € 16,99 €(20% Off off)
06

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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43% Off
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

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.

8,49 € 14,99 €(43% Off off)
07

Digitus

Digitus 70166 USB Type C Serial Adaptor, Black

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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 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.

12,70 €
08

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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19% Off
8.6

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

This product contains an e-book that contains useful information on how to start your project. It allows for quick installation and saves time in the setup process. There are a number of application examples, comprehensive installation guides, and libraries.
The USB serial adapter is equipped with the FT232RL compatible chip and is one of the most commonly used converters on the market. It has a signed driver registered by Microsoft, which is installed after connecting the module via Windows Update.
No additional drivers are required to run the AZ-Delivery USB to TL converter adapter. The logic level of the adapter can be adjusted using jumpers on the card.
AZ-Delivery USB to TTL Converter Adapter is also fully compatible with the Linux operating system and is widely used by Linux users.
AZ-Delivery USB serial adapter has the following pin definition: DTR, RXD, TXD, VCC, CTS, CTS, GND.

6,99 € 8,59 €(19% Off off)
09

AZDelivery

AZDelivery 1 x USB-C to TTL Serial Adapter for 3.3 V and 5 V Compatible with FT232RL Compatible with Arduino Includes E-Book

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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

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-C 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 adapter compatible with FT232-AZ and the logic level can be adjusted via the jumpers on the board.
Even when used with Linux, the AZDelivery converter is very popular.

7,49 €
10

APKLVSR

APKLVSR Pack of 3 UART-TTL USB Adapter with CH340G Converter for 3.3 V and 5 V with Jumper Cable RS232 to TTL USB Adapter for Arduino

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8.4

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

The PWR, TXD and RXD power LEDs not only have a reserved RTS and CTS position, so you can conveniently and intuitively tell if the product is operating in the absence of the instrument case.
Supports Windows 98 / ME / 2000 / XP / Server 2003 / VISTA / Server 2008 / Win7 / Win8 32 bit / 64
High quality and high quality yellow pen, pen more durable than the black market, gorgeous
CH340G chips, the chips comply with the official STC recommendation. USB to TTL chips are not displayed due to incompatibilities due to another drive/computer.
3V3 and 5V through a short circuit risk selection

7,99 €