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（Not VGA）

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（Not VGA）

Q: Anyone have any luck getting these to work with with Windows 11? Neither of mine work. I get an error in device manager that says to contact supplier

The messed up part is with a little help from Google there is a work around for the PL-2303A chipset with Win 11. AFAIK there is absolutely no reason why Win 11 would work with this chipset. Prolific must have supplied the pseudo driver (the one that lists the error) to Microsoft for use w/ Win 11. Planned obsolescence, BS! I would boycott any product with a Prolific chipset just to put it to them as they try to rip-off consumers. If you already have one, the procedure requires you to delete the nonsense the junk Prolific supplied Microsoft for Win 11 and load the Win 10 driver. I have tried and tested this and it works. DON'T BUY THIS PRODUCT FOR WINDOWS 11 SYSTEMS, native driver will not work and none will be officially available as Prolific has EOL this product in 2019.

Q: Does this operate at rs232 levels or does it only convert to 5v logic levels?

This cable is rs232 signal level. Amazon does sell a similar cable (same chip set) that supports ttl level signal. The other cable has flying leads for your application

Q: Why does that cross-section of the cable show so many wires? shouldn't there be only four lines for usb?

The wires that are shown are for the serial end of the cable. They are shown in groups with 3 tinned copper conductor. the wire groups each go to their connection on the serial end.

Product ID: 61385215

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Details

Compatible Devices
Modem
Connector Type
DB9
Color
Black
Item dimensions L x W x H
0.39 x 0.39 x
Brand
BENFEI

⚡1Mbps high-speed data transfer

🔌1.8M USB to DB9 cable length

🖥️Prolific PL-2303 chipset for wide OS support

Frequently Bought Together

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（Not VGA）

OIKWAN USB to RS232, USB Serial Adapter with FTDI Chipset,USB 2.0 to Male DB9 Serial Cable for Windows 11,10, 8, 7, Vista, XP, 2000, Linux and Mac OS(6ft)…

SABRENT USB 2.0 to Serial (9 Pin) DB 9 RS 232 Converter Cable, Prolific Chipset, HEXNUTS, [Windows 11/10/8.1/8/7/VISTA/XP, Mac OS X 10.6 and Above] 2.5 Feet (CB-DB9P)

Description

🔗 Connect Like a Pro: The Ultimate USB to Serial Adapter for Modern Managers

COMPACT PORTABLE - Slim 0.39-inch design and lightweight 1-ounce build make it perfect for on-the-go professionals.
ROBUST DATA INTEGRITY - Triple shielding and tinned copper conductor ensure stable, interference-free data transfer at 1Mbps.
PLUG PLAY SIMPLICITY - Effortless setup with one-time driver install—get connected fast without hassle.
UNIVERSAL COMPATIBILITY - Seamlessly works across Windows 11 to XP, Mac OS X 10.6+, and Linux—future-proof your serial connections.
RELIABLE SUPPORT WARRANTY - Backed by an exclusive 18-month warranty and responsive customer service for peace of mind.

The BENFEI USB to Serial Adapter features a 1.8-meter USB to DB9 cable with a Prolific PL-2303 chipset, delivering reliable 1Mbps data transfer. Compatible with a broad range of operating systems including Windows 11/10/8/7, Mac OS X 10.6+, and Linux, it ensures seamless connectivity for serial devices like modems and barcode scanners. Its triple-shielded tinned copper conductor guarantees stable signal integrity, while the compact design and plug-and-play setup cater to busy professionals needing dependable serial communication. Comes with an 18-month warranty and dedicated customer support.

Specifications

Unit Count	1.0 Count
Number of Items	1
Item Weight	1 Ounces
Package Quantity	1
Item Dimensions	0.39 x 0.39 x 0.39 inches
Finish Types	Copper
Color	Black
Warranty Type	Limited
Current Rating	1 Amps
Connector Type Used on Cable	DB9
Number of Ports	1
Compatible Devices	Modem

Have a Question? See What Others Asked

It works on Window 10?

Anyone have any luck getting these to work with with Windows 11? Neither of mine work. I get an error in device manager that says to contact supplier

Does this operate at rs232 levels or does it only convert to 5v logic levels?

Why does that cross-section of the cable show so many wires? shouldn't there be only four lines for usb?

Reviews

R**E

Useful

Works as expected.

21.06.2025

J**.

Of all the choices: This One Works!

Show up as a familiar vendor in Device Manager. Works as expected at high speed baud rate.

12.05.2025

B**N

Driver needed > driver cant be downloaded

The wbesite in the manual for drivers is wrong, but found it eventually. Otherwise works just fine.

31.07.2025

M**C

Worked to hookup to an Ion8650 electric meter to read data on my laptop

Worked great to Hook up to an ion8650 electric meter to my laptop. Just what I needed and affordable.

29.05.2025

M**E

Serial interface works simply Windows 10

Works perfectly on 🪟 10. Automatic driver installation upon detection. Easy install.

27.05.2025

T**N

Current version does not appear to work on Macbook Pro with M2 Silicon

I have purchased these - they came with the PL-2303 chip inside and work just fine on my Mac, both M1 and M2. Also on my PC (windows 10).However I purchased 1 recently and it is not recognized by my Mac (M2). It does work on my PC, but the mac won't recognize it. Downloading the newest drivers didn't change that.From the Macs System Information/USB listing... the old, working version of this cable shows a Product ID of 0x2303, vendor Prolific. This new, non-working cable, shows up as Product ID 23a3, vendor = Prolific.I'm guessing the product ID is not matching the driver for some reason. I've done some searching around the internet and haven't seen any references to this.... other than the general advice to get an FTDI chip cable and not use the 2303 cable.The product information does not mention this issue - everything just says compatible with Mac.

9.07.2023

R**R

Plug and Play with Exceptional Quality

I needed a USB to RS-232 Male serial cable for some programming at my job. My initial thoughts when unpacking the cable and seeing a CD to install drivers was, great another piece of software on my laptop that is already loaded with work software. Because I did not want to install another driver on my laptop, I decided to try the cable without installing the drivers and it worked without an issue. This is not to say there may be devices that communicate better with the proper drivers installed, but for my use, it was plug and play. I was using Windows 10 as the operating system. You will most likely need to install drivers to work on older operating systems.Overall the quality of the cable is exceptional and exceeded my expectations. Great cable for the price!

4.03.2020

T**R

Does not work with Windows 11

Doesn't work with windows 11. Tried downloading drivers from the website, but no success. Ended up buying TRENDnet USB to Serial 9-Pin Converter Cable, Connect a RS-232 Serial Device to a USB 2.0 and it worked perfectly no need to install any extra drivers with Windows 11.

11.02.2025

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