This is a very good "open top" acrylic case for your Raspberry Pi 4. I was looking for exactly this type of case and am very happy with it. All connections that I need are available and the fan cools the CPU well even under load. I added heatsinks to the CPU and USB controller to dissipate heat more efficiently. The only possible mark on the case that I've noticed is a match/alignment to one of the cutouts on the top of the case that doesn't align properly with the MIPI CSI 2-lane camera connector. I won't be using this port so the case suits me well. The hallmark of this product - and what's holding it back from a perfect five star rating - is the assembly instructions. Following the instructions makes assembling the case very difficult, especially step 3. I would first install the four short standoffs on the Raspberry Pi board BEFORE putting the screws in the bottom acrylic case. This greatly simplifies the process of installing nuts on the racks on the board.
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