1 set RPi GPIO Expansion Board & 1 pcs Case Shell Box Specifically designed for 3B, 2B, 1B+, 1A+, zero W, zero Can break out all those tasty power, GPIO, I2C and SPI pins from the 40-pin header onto a solderless breadboard Each order comes with a 40 pin ribbon cable and assembled T Type Plus GPIO Expansion Board. You can plug the 40-pin GPIO cable between the Pi computer and the T Type Plus GPIO expansion board This GPIO expansion board is in a fancy T-shape, which is not as compact, but is a little easier to read the labels. This is the assembled version. Material:ABS colour:black & red 1. Newest ABS case for 4 Model B. 2. Full access to all for 4 ports, such as GPIO port, Micro- port, USB port, SD CARD slot. 3. With fashion appearance, it 't block the WiFi and Bluetooth signal. 4. Specifically comes with cooling fan and aluminum heat sink, keep your Pi 4 cooling. Note: Only the case shell does not contain other display content Package Contents: 1 x GPIO 40P Breakout Board For 2 Mode B & B+ 1 x 20cm FC40 40pin Flat Rainbow Ribbon Cable 1 x Protective Case Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.