UGREEN USB Serial Cable USB to RS232 DB9 9 pin Converter Cable for Connecting Cisco Routers and Switches,Celestron Telescope Nexstar hand Controller, Extron Crestron Products with PL2303 Chipset (2m)

Great device, worked first time no issues. Until I upgraded to Windows 11, this chipset is not compatible with Windows 11.

It is functioning nicely as a means of controlling my NIR spectrometer via the spectrometer's parallel D25 serial connection, using a D25 to D9 serial adapter. My PC lacks the now scarce D9 serial port, so a USB to Serial D9 cable represents my only option. This Ugreen cable has a chip inside, in order for it to be recognised by Ubuntu 20.04 linux OS, which it is, natively. The NIR spectrometer software requires Windows XP or Windows 7 but a Virtualbox virtual machine (VM) runs both Windows OS's as guest OS's under Ubuntu 20.04 LTS host OS. This cable enables a serial connection on Virtualbox as serial host machine (not host pipe). Select the dummy guest Windows COM port, IRQ and address and save. Be sure to allow all users read access to the USB serial host device in a linux terminal, using: " sudo chmod 666 /dev/ttyUSB0". After setting up the VMs and configuring the serial connection it worked very well. I would have opted for a longer cable than the one metre length, had this been an option, but a Ugreen USB male to female extension cable privided the necessary reach from PC on my desk to table with NIR spectrometer. Overall a very useful cable indeed.

Used this to debug a device that only supported serial connections, you may need to install a usb driver to convert the serial to usb for mac or windows but the cable works.

In summary, the best advice I can give you is to download the latest driver installation software from Prolific and use it to install the latest driver. If you then still have a problem, uninstall the driver and reinstall with 'run as administrator' selected. I bought this as an upgrade to another brand that used an earlier Prolific PL2303 chipset that worked well on Windows 7. However, on both versions of Windows 10 I had problems with installation. With Windows 10 Home it performed an automatic installation of the driver and looked like it had generated a viable COM port. However, when I tried using the Chipset Checking application it couldn't detect the type of PL2303 chip in use. With Windows 10 Pro I found that the driver did not automatically install. Even after downloading and installing the latest driver from Prolific manually, it was still listed in Device Manager as an 'Other device' without a driver. Looking at the error message available under the device properties in Device Manager gave me something to look for on the Internet. I eventually found that the device driver installation software needed to be 'run as administrator'. Once this was done the USB-RS232 adapter cable installed correctly when plugged-in. The Chipset Checking software identified the chipset as PL-2303GT. The driver version installed on the Windows 10 Pro PC was 5.1.3.0. On the Windows 10 Home PC the automatically installed driver version was 5.1.0.0. So I downloaded the latest driver installation software from Prolific and it installed the latest driver 5.1.3.0. This time, running the Chipset Checking software yielded the PL-2303GT chipset. Note that the Chipset Checking software is used to check that genuine Prolific chips have been used in the product and not counterfeit ones.

Hmm, not much to say here. It works perfectly fine out of the box on Linux (not a given) so I doubt you'll have problems on Windows, maybe on Mac. Zero problems at all, does what it needs to - convert RS232 serial to USB. Have been using this with my Zoom dialup modem for tinkering but can be used for other things, such as connecting to the serial consoles of networking devices. Cheap and cheerful, and perfectly functional to boot.

Confirming that this USB to serial port (RS232) adapter works with Windows 11 v24H2. This comes with a micro CD and on that in "<CD Drive letter>:\Windows\PL23XX_Prolific_DriverInstaller_v300(win11)" I ran "PL23XX-M_LogoDriver_Setup_v300_20210907.exe", it installed okay, works fine (using to update an old Marantz/Pronto programmable remote control).

A couple of noteworthy points about this cable: 1. It is a genuine USB2.0 interface, meaning it will work on hardware (like SoC based embedded systems) that have a USB2.0 interface that is not back-wards compatible with USB1. This was very important for me, as I bought the cable to use on such a system. 2. The quality of the USB cable itself feels substantial! It feels well shielded and is quite thick. Much better than I was expecting. 3. It was indeed a Prolific PL2303, which meant it worked out of the box. I purchased the cable to gather data from a weather station, connected to a refreshed TP-LINK MR3020 running MeteoPlug, and this cable did the job perfectly, despite the many limitations in the hardware this setup will support. I have no doubt I'll be buying more of these cables, as they are by far, the best PL2303-based cable I've seen, for the money.

Works fine on Windows 10. I bought it to control a SkyWatcher telescope and that is just what it does. However I also want to use it with an older Vista laptop as I want the laptop outside and I will live with that system being occasionaly exposed to damp humid conditions. The drivers will not load on this system and although I had an email from Ugreen customer service telling how much they cared about their customers, emailing them about this brought absolutley no response hence 3 stars.

Inside the Box have Cable and Driver installation Disk, and tested and working fine.

パソコンはWindows 7 Pro 32bitを使用しています。 シリアルポートが不具合を起こしたため、このケーブルを使用してシリアルポートを使うために注文しました。 USB 2.0ポートへいきなりケーブルを接続してみましたが、ドライバが当たりませんでした。 付属の小さなディスクを使ってドライバをインストールすると、その後は問題なくドライバが当たり、使用可能になりました。 USB3.0ポートは試していないので不明ですが、USB 2.0ポートを使うのが安心でしょう。 シリアルポートが不具合を起こした際には、こうしたUSB変換ケーブルは非常に重宝します。

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Es compatible con windows 10, el cable es muy flexible y de buena calidad. Perfecto para utilizarlo en una lap-top o una pc de escritorio que no cuente con el puerto serial.

Excelente calidad, se siente más robusto que otros y al mismo (o menor) precio, los acabados también se ven mejor. Funciona bien y se ve muy bien.