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After exploring an incredibly huge number of articles and reviews by our intelligent AI and ML engines; and deep refining, breakdown and rectification by our specialized high-technology gurus, the golden shortlist for the Best Serial Adapters (2021) is finally prepared.

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In order to come up with the Best Serial Adapters (2021), our dynamic platforms and experts have taken many elements into account such as product fitness for use, features that meet consumers needs and give customer satisfaction, defect-free, conformity of standards, value-for-money, robustness, robustness, quality conformance to user requirements and regulations, protection and safety, real buyer satisfaction and many others. It is worth to mention that each user has different needs so please consider the below benchmarking as a guide and not as a gospel. Nonetheless, in the below shortlist you can absolutely find the overall best ones regardless of your needs.

Our dynamic platforms and professional technology gurus work hard to provide you with the best product choices. We feel that our review benchmarking can help you simplify your purchase decision and select among the very Best Serial Adapters (2021).

Best Serial Adapters

SaleBest Choice No. 1
Sabrent USB 2.0 to Serial (9-Pin) DB-9 RS-232 Converter Cable, Prolific Chipset, – HEXNUTS – , [Windows 10/8.1/8/7/VISTA/XP, Mac OS X 10.6 and Above] 2.5 Feet (CB-DB9P)
  • 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.
Best Choice No. 2
USB to Serial Adapter, Benfei USB to RS-232 Male (9-pin) DB9 Serial Cable, Prolific Chipset, Windows 10/8.1/8/7, Mac OS X 10.6 and Above, 1.5M
  • HOW IT WORKS: BENFEI USB to RS232 DB9 Male Serial Adapter is designed for connecting to serial devices such as DB9 equipped serial modems, ISDN Terminal Adapters, digital cameras, label writers, palm PCs, barcode scanners, PDAs etc through USB port with 1Mbps data transfer rate;
  • CONNECTORS: With standard USB Type A Male to standard Male 9-pin DB9 RS-232 serial connector; Please pay attention: it’s not the USB to VGA cable or USB to DB9 cable. If you need USB-VGA, please refer to https://www.amazon.com/dp/B085KX97QG?ref=myi_title_dp
  • CONDUCTOR & SHIELDING: Tinned Copper Conductor(Wire guage#24#28) and triple shielding ensure the best data transfer rate. Powered by USB port, no external power adapter required. Simple installation, plug & play after one time driver installation;
  • WIDE COMPATIBILITY: USB to RS232 adapter is with Prolific 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.
  • 18 MONTH WARRANTY: Exclusive Benfei Unconditional 18-month Warranty ensures long-time satisfaction of your purchase; Friendly and easy-to-reach customer service to solve your problems timely
Best Choice No. 3
Tripp Lite Keyspan High-Speed USB to Serial Adapter, PC & Mac (USA-19HS)
  • 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
Best Choice No. 4
DB9 null modem female to female slimline data transfer serial port adapter 2 Pack
  • Converts standard, straight wired cables to null modem wiring
  • Gold contact plating provides reliable connections with repeated mating cycles
  • Slimline design reduces leverage strain on computer ports
  • UL grade 94V-0 connector insulator satisfies flammability requirements
  • Screws are removable and reversible
Best Choice No. 5
USB to RS232 Adapter with PL2303 Chipset, CableCreation 6.6ft USB 2.0 Male to RS232 Female DB9 Serial Converter Cable for Cashier Register, Modem, Scanner, Digital Cameras, CNC,Black
  • Gold Plated USB 2.0 Male to RS232 Female DB9 Serial Cable connects a serial DB9 (9 PIN) device, such as a modem, to a USB port on your computer. USB port with 1Mbps data transfer rate. 👉NOTE: It’s USB to RS232 FEMALE adapter!!!
  • Latest Prolific PL2303 chipset. supports Windows 10/8.1/8/7/Vista/XP//2000 /Linux 2.4 or above, Mac OS X 10.6 and above; ★ drivers can be downloaded at cablecreation website.★
  • 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 it’s not compatible with Cutting plotter, SCM.
  • Tinned Copper Conductor and triple shielding ensure the best data transfer rate. USB bus powered, no external power adapter required.
  • CableCreation offers 24-month product warranty and easy to reach lifetime customer services
Best Choice No. 6
Gearmo USB Serial Adapter FTDI Chip RS232 DB-9 920K w/TX/RX LED, Windows 10, 8, 7
  • USB TO RS232 SERIAL – 5ft in length serial adapter. Connect legacy DB-9 serial communications devices to a modern computer with USB
  • EASY TEST – Easy test RS-232 host to device link. With a full LED, dual color display, tester output. This will make testing your connections with ease.
  • COMPATABILITY – With support on multiple OS platforms this makes our USB RS- 232 very versatile. Supported OS platforms are Windows 7, 8 and 10 as well as Linux and MacOS 10.X
  • WHY Gearmo? Your Trusted Partner based in the USA, Providing Advanced Engineering, Highly Reliable and Superior Built Products to handle the most demanding industries for over 20 years. Reach out to us for CAD, Mechanical Drawings and, Data Sheets.
  • Os compatibility: Windows 7, 8 and Windows 10 as well as Linux and MacOS 10.X
SaleBest Choice No. 7
UGREEN USB 2.0 to RS232 DB9 Serial Cable Male A Converter Adapter with PL2303 Chipset for Windows 10 8.1 8 7 Vista Linux and Mac OS X 10.6 and Above 6FT
  • How it works: Ugreen USB to RS232 DB9 Serial Adapter is designed for connecting to serial devices such as DB9 equipped serial modems, ISDN Terminal Adapters, digital cameras, label writers, palm PCs, barcode scanners, PDAs etc through USB port with 1Mbps data transfer rate;
  • Connectors: With standard USB Type A Male to standard 9-pin DB9 RS-232 serial connector;
  • Chipset & Supported OS: PL-2303 Chipset for widest possible compatibility with Windows (10/8.1/8/7XP), Mac, Linux, etc;
  • Conductor & Shielding: Tinned Copper Conductor(Wire guage#24#28) and triple shielding ensure the best data transfer rate. Powered by USB port, no external power adapter required. Simple installation, plug & play after one time driver installation;
  • What you get: USB 2.0 to Serial (9-Pin) DB-9 RS-232 Converter Cable is backed with 24-months worry-free and customer service support.
Best Choice No. 8
USB C to RS232 DB9 Serial Port Adapter Cable(USB-C to Serial, USB C to DB9, USB C to RS232) with FTDI Chipset Supports Windows 10 8 7 and Mac Linux…
  • How it works: Use USB-C transfer rate up to 1Mbps to RS-232 converter to realize data transfer between PC or laptop with USB Type C port and RS-232 device, allows your PC or laptop to connect RS-232 serial devices and programs that communicate through COM ports,No external power source is required
  • Connectors :USB Type C male, RS232 db9 male,USB Type C 2.0 male to USB DB9 male
  • Chipset & Supported OS: FTDI-FT232RL Chipset for widest possible stablity and compatibility with Windows (10/8.1/8/7XP), Mac, Linux, etc. Support almost all serial COM port
  • Plug and play: Powered by USB-C port, no external power adapter required. Simple installation, plug & play after one time driver installation. Supports Automatic Handshake;
  • What you get: USB type C to Serial (9-Pin) DB-9 RS-232 Converter Cable is backed with 24-months worry-free and customer service support.
Best Choice No. 9
DB9 null modem female to female slimline data transfer serial port adapter 10 Pack
  • Converts standard, straight wired cables to null modem wiring
  • Gold contact plating provides reliable connections with repeated mating cycles
  • Slimline design reduces leverage strain on computer ports
  • UL grade 94V-0 connector insulator satisfies flammability requirements
  • Screws & Nuts can remove or add easily
Best Choice No. 10
ANMBEST 2PCS DB9 Breakout Connector, Solderless Metal Shell RS232 D-SUB Serial to 9-Pin Port Terminal Female Adapter Connector Breakout Board with Case
  • DURABLE: Pure copper plated joints, fine solder joints, resistance to plug, and good contact to ensure high-quality, durability and a long life. Zinc Alloy Metal Shell: Anti-pressure; Anti-intreference; Anti-high temperature.
  • No Soldering Required: Adopt environmentally friendly insulated terminal block. Just use a small screwdriver to open up the terminal blocks, slide in your stranded or solid-core wire, and re-tighten.
  • SCREW LOCK: The shell is locked with screws and nuts, which can avoid the disadvantages of not closing the shell tightly or large gaps.
  • RELIABLE: Each product is equipped with 5mm, 6mm, 7.5mm, 8.5mm 4 different sizes of tail pipe. Make sure that the cable is pulled in use without causing dropped wires or poor contact.
  • WIDELY APPLICATIONS: It can connect all kinds of serial devices. Such as computer and tax control machine, digital camera, PLC, PDA, MODEM, set-top box, barcode machine, industrial instrumentation and other equipment for communication.

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