Adafruit Industries Pi T-Cobbler Breakout Kit for Raspberry Pi with GPIO Cable - Assembled!

Most importantly, this arrived on time (2-day shipping before Christmas) and was exactly as described. It was packed carefully and undamaged.It's a great product and does exactly what it promises, just be aware this is for the "Raspberry Pi Model B, revision 1 or 2" -- that's Raspberry Pi 1, Model B or B+. The Raspberry Pi 2 Model B is not compatible. The cable won't cover all the header pins on a Pi 2, and because of the width of its housing, can't fit mid-header either. The description says exactly which Pis it's compatible with -- I just didn't read carefully. Including a compatibility chart in the product description would probably save some headaches.Since I have a Raspi 1 B that this will fit, I decided to keep this one and order a second one designed for the Raspi 2 B to replace it. If you want to prototype on a Raspi 1 B or 1B+, this is your jam. If you want one Cobbler to rule them all, get one of these and the 40-to-26 pin reducer from Adafruit. That should get you going on any Pi to date.

This connector doesn't just pass the pins through, was trying to use this to jump some breadboards together and it did not work. Then I realized that all the grounds and vcc are shared

Works great for prototyping and testing with a breadboard.

I bought the wrong Cobbler - needed the 40-pin GPIO breakout for Pi B+ and Pi 2 boards, not this 26 pin model. That's my fault.As it makes no financial sense to return it, I'm keeping it.

Nice and simple way to connect the GPIO pins to a breadboard and more easily see what pin is which.

Makes working on a breadboard easy with the Pi.

Did not fully populate the pins of my rpi 2. The return was painless.

Rather than the one pictured, I actually received this item: http://amzn.com/B00EBXP3R2It's more of a pain to work with.The one I ordered costs twice as much as the one I received.I think I got Amazon-ed.