USB to Serial RS-232 DB9 FTDI Mini Adapter with Extension Cable

I do software development on a lot of embedded systems ranging from tiny PIC and AVR MCU based device to big ARM and PowerPC MPU based systems. Some of the older systems export the processor logic-level serial port out through a DB9 connector with RS232 signal levels. This little gadget is inexpensive enough that I buy one and just screw it onto the board, more or less permanently converting the board to a USB-serial interface. The gadget is barely bigger than a bare DB9 connector hood. And since it uses an FDTI chip inside, it works flawlessly. (I've given up using any USB-serial adapter that doesn't use a chip from FTDI because the rest are all crap.) So now when faced with an older DB9 RS232 port, I just automatically order one of these from Amazon.com and eliminate that little detail from my worry list.

This device just works. Plugged it in to my Windows 7 x64 notebook and within 10 seconds it was ready to use on Com 3. It then allowed me to set it to Com port 1, which makes it a bit easier to use it with some applications. In short, good product for my needs.

I've tested it so far with Mac OS X 10.6 and 10.4.11, using the current driver from FTDI's ftdichip site. Works just fine with my microcontrollers using ZTerm. I have additional plans for it, and am confident it will work as well with those. Heck of a deal at this price!

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I ordered these for work because with the Covid restrictions, it is easier to order myself and deliver to work. We have dozens of these on our test rack computers, 2 per computer, COM 1 & COM 2. Once set up, they always hold their settings (COM Port # and Baud rate). In 10 yrs we have never had one of these units fail. We are stuck with Serial Port communications and these units are a must have for us in our Testing lab.

No problems with OS/X, Linux, or Windows. Used with Windows in a VM, and Wine within OS/X to flash embedded devices. Good stuff. The FTDI stuff always is.

Workls flawlessley on my fuel tuning module and older gps. Love it. I originally purchased one with a different chipset and it did not work on anything, this one works on em all.

I plugged it in to a Windows XP 32-bit machine, Windows took a few minutes to search the internet for a driver, installed the driver and presto it worked! Only used it 2x so far, but those 2x it worked perfectly.