Overview
This is an I/O expansion kit designed for Raspberry Pi, which provides 5 sets of 2x20 pinheaders, that means a handy way to "stack" multi different HATs together, and use them as a specific combination / project.

Features
Standard Raspberry Pi connectivity, directly pluggable OR through ribbon cable
5 sets of 2x20 pinheaders, connect multi HATs together
USB external power port, provides enough power supply for multi HATs
Clear and descriptive pin labels for easy use
Reserved jumper pads on the bottom side, pin connections are changeable by soldering, to avoid pin conflicts
Note: make sure there are no any pin conflicts between the HATs you want to use together before connecting.

Specifications
Dimension: 183mm × 65mm
Mounting hole size: 3mm

Package Contains :
Stack HAT x1
Ribbon cable 40PIN x1
2x20 male pinheader x1
RPi screws pack (4pcs) x1

For more details you may need to know, pls firstly send me message via Amazon, I will then send attached link including User Guide for you, thank you for patience.:)