Review on 🔌 Enhance Raspberry Pi Capabilities with MakerFocus GPIO Extension Board: Compatible with Pi 4B/Pi3/2 by James Roper

This GPIO expansion board is superior because it has mounting holes for each GPIO block. This allows you to safely install additional HATs. Why do you want to install HAT on it? Because not all HATs have extended pin sockets to allow for additional stacking. They are "top hats" because they have to be on top! So what if you want to use two cylinders? Then use this product! What do not you like? Instead of THREE blocks, it would be easy to get FOUR blocks simply by using an extended connector. This would allow TWO size zero HATs to sit neatly alongside larger Pi models. Whatever it was, one hat will be in the middle and the other will stick out over the end. What a waste.