UCTRONICS Male to Female Gpio Ribbon Cable 40pin 8inch Breadboard Jumper Wires for Connection Raspberry Pi 3 2 Model B B+ W/ 3.5/5 Inch Tft Touch Screen LCD Display

It's standard size length gets the job done but I would of loved if it had been a bit longer. Still great product I would buy again

Cut it in half and use them to jump from a rPi daughter board to a mother board for a complete system.

This review is for UCTRONICS Male to Female GPIO Ribbon Cable 40pin. There isn't a lot to say about this cable, and that is actually a good thing. Everything was done right on the cable that I received. It has the correct pin connections on both connectors to extend a Raspberry Pi GPIO hat outside the case. The strain relief on the cables is decent and the plastic connectors are good. Really, there is no reason to have a color coded cable, but it does let you verify that the cable is wired correctly. It is kind of nice to look at instead of another dull grey ribbon cable. I'm using this cable with a GPIO breakout board HAT that has LEDs, so it was very easy to tell that the cable was wired correctly. The length is enough to get outside the case without a lot of extra to flop around or introduce noise on the signals. I won't put the top on my case, but this cable will fit nicely through a small slot that is open on at least one side. The connectors obviously won't fit through a slot the size of the ribbon cable unless it is at a seam between the top and bottom.

This connector is way wider than it needs to be, which makes it impossible to use with standard RPi cases because it interferes with screw spacing. If you could shave 2-3 mm off the width, it would fit just about anything.

The cable fit perfectly on both the pi 4b and pi zero 2w. Unfortunately I wanted to use this cable to connect the pi zero 2w to a tft display. Gpio is for the touch TFT. With the display plugged into the board everything worked. Using the cable, I lost the tft touch.