USB to DB25 Male Serial Converter Apdater Null Modem Crossover Printer Cable FT231XS Driver Programming for Epson TM-T88V Printer

I bought this cable, found that it's actually only for a specific device and not generically wired. It was a great quality cable, so I decided to rewire it myself (such cables aren't easy to find) - it works great now. Price was good, quality nice. Five stars.

It's pretty much the only USB to DB25 null model cable on Amazon, but, hey, it works. No issues connecting my Windows laptop to my TRS-80 Model 102 at 1200 baud.

Basically everything in the description of this is a lie. The cable I received does NOT use a FTDI usb-serial converter, it instead has a Prolific part. Additionally, despite the picture of the cable-end internals which clearly shows control-signals wired (DCD, CTS), the cable I received has only 3 connected pins. Ground, TX, and RX. The actual wire used has plenty of conductors, the unused ones have just been chopped off. I specifically need CTS/RTS flow control for my older device. Which is part of what makes a null modem cable a null modem cable. At best, this is just a TX/RX crossover cable. What garbage.

I used this on some Lenovo Mini M93P Computers being setup at drive thrus with limited space. The computers did not have serial ports. These worked well for connecting the Epson U375 receipt/validator printers via USB ports to their DB25 connectors without any adapters.

I’m using this with a very old HP Draftpro plotter. Plugs right in and worked with no issues with RTS/CTS handshaking. No extra adapters or gender changers required.

Surprise! This is not just specific to the Epson printer like the item description says, but is rather a general USB-Serial adapter that would suit a ton more usecases. I am using this to connect a TRS-80 Model 100 to a Raspberry Pi, and it works every bit as well as I thought it would. I'm browsing the web in text, via serial terminal, on a machine made in 1981, and this adapter is mission critical to my very specific experience. It could work for you too. Recommended!

I'm using this to run calibration on a surgical laser, and it works great. Much easier than a DB9 adapter plus a null modem DB9 to DB25. Solid build quality too.

Il prodotto funziona bene con la stampante Epson TM-U295. Il connettore per la stampante è fatto in metallo. Dopo l'installazione software è necessario fare ripartire il computer. Soldi ben spesi per usare la mia stampante con questa piccola e comoda interfaccia USB - RS232. The product works well with the Epson TM-U295 printer. The connector for the printer is made of metal. After the software installation it is necessary to restart the computer. Money well spent using my printer with this little USB - RS232 interface.

didn't do what I wanted it for

I'ts there in the back of my xp, but new technology?

In contrast to another review from 2023, the product I received had an FTDI chip and 8 wires. Perhaps they ordered a different product, or more likely the seller has changed the product since 2023. Either way, while it's a relief to see FTDI on the chip and in Device Manager, the wiring doesn't match any "null modem" pinouts I can find online. I was planning on rewiring this product anyway, but if you are after null modem wiring specifically please expect to do some soldering if you buy this. At least the metal DB25 connector and USB connector's poorly-glued clamshell make access for rework easy. At this price point for genuine FTDI on a rare connector, the annoyance is a feature. Here's the pinout I got: FTDI chip DB25 Connector Pin name Pin num GND | 7 DCD | 4+5 5V | NC CTS | 8 RI | 22 DTR | 6 TXD | 3 RTS | 8 RXD | 2 DSR | 20