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)

I ordered this to use for work since there are no laptops with serial ports anymore. Now I'm able to connect to the system using the USB port on my laptop. This will allow me to continue doing my work with my newer laptop.

Years ago, serial cables were a dime a dozen and every PC and some laptops had a serial port. USB basically made the serial port obsolete for most devices except networking devices like switches and routers.Most switches in the past few years come with a micro USB or USB-C management port in addition to an RJ45 jack for a serial cable. I've found the USB connections to be hit or miss. But a serial cable always works.I have a TP-Link SG3428 switch that I needed to reset the password for so it could be adopted by an Omada controller. Most layer 2/3 switches don't have a reset button you can press, so you need to console in and do it from the bios. Used this adapter along with the RJ45 to serial port cable the switch came with and it worked perfectly.You will need to load the drivers for the cable as it has a chip in it. But the adapter comes with a driver CD. Ironically, that presents another problem as no PCs or laptops come with a CD drive anymore. But my personal PC at home has multiple disc drives so wasn't an issue for me.This cable just works, no issues. Highly recommended.

It does what I needed it to do. The 6' length is good for the work I do. Careful it may not be a cable it may be a driver that could be your laptop problem.

It is easy to get your DB9 pins wrong like I did when at first I thought the Sabrent USB to Serial Model: CB-DB9P did not work. However, it works as advertised. Secondly, check the Windows "Device Manager" under "Ports" to be sure the device driver is present. The Sabrent is NOT plug-n-play. You must download and install the driver which will show up as as a "COM" number in the Windows "Device Manager" under "Ports" which you must correctly select and use with your Terminal Emulator such as PuTTY. Only 4 Stars because plug-n-play would be better.

seems to work as it should. was a great price and seems like a quality cable

Easy amd simple, good quality

I plugged this device into my MacBook Pro expecting to see devices appear under /dev/cu* and /dev/tty* but nothing appeared. It *does* appear in System Information under the USB subsection, but no devices appear under /dev. Fine, I'll download and install a driver, because this is the year 2025 and apparently drivers are still required for goofy devices like this one. There is no download matching the device I have, so I take a guess at which driver to download. There are three versions of the driver packed inside the .zip so I try the newest one, from 2021. I get a message that the kernel extension needs to be updated and could not be installed. Why in the heck is a usb to serial adapter so difficult in 2025? I would recommend against purchasing anything from Sabrent for a Mac. They clearly don't care about Macs.

Funciona Excelente