There is no slot in the case. If a jumper is attached to the Raspberry Pi's pins, the top part will not attach properly. There's no ventilation either, meaning a radiator might not make a noticeable difference due to the limited space. Opinions are mixed on whether or not you should install a heatsink when building a retro gaming console, but for just a few bucks more, it's better to be safe than sorry. I will replace the case before long-term use of Retrotropie. This is a very good case if you want something thin and simple. Everything fits together and nothing looks cheap. I can't overlook the extra millimeter that would be required to be compatible with a jumper wire. --- UPDATE --- I have upgraded the review from 3 stars to 4 stars. The reason for this is that the case is actually quite nice and simple. The top plate was easy enough to modify with a Dremel tool that there was enough room for the jumper wire and the plate still snapped perfectly into place. As for the actual core temperature under load, everything was fine. I added a small script to log the core temperature about every 30 seconds and the highest recorded temperature under load was about 70.3C. I'd say averaged around 66.5ยฐC. This has been reported when using RetroPie to play Vagrant Story, Quest 64, and Legend of Dragoon for about 3 hours each. However, the house is kept at around 75 feet Fahrenheit, which may contribute to the device's lower core temperature. If you live in a hotter climate like Texas, a case with a fan might be your best option. I ordered this case: https://www.amazon.com/gp/product/B012GCLR6/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1 and will check the core temperature with a fan and heatsink. I'll report the results of the interior temperature test here after I've delivered the new case.
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