This power switch connects between the DC power supply and the DE10-nano. It has a nominal voltage of 5.16V when connected to the DE10-Nano stock power supply outputting at 5.29V under load. In summary, it has minimal voltage drop due to insertion loss. No more plugging/unplugging the DE10-nano between uses.
If you’re in the US, and want to get switches that I’ve tested, get the 4 pack from here (Amazon affiliate link): https://amzn.to/377ssre
Note that I can only vouch for the quality of the four pack, and not any of the other items on the same listing, as they may source them from different vendors.