The Youlian PCB suitable for the K100/K00pro mechanical keyboard shell has a charging circuit and no protection circuit, so the battery must use a protected battery.
PS.1: When using this pcb with the k100 plastic shell, you may need to cut the reinforcing ribs. The aluminum shell has no reinforcing ribs, so there is no such problem.
PS.2: If you use the K100/K00pro original positioning plate drawing to cut the positioning plate, there may be problems with the shaft hole position not matching and the satellite axis opening being too small. It is possible that the original factory drawing is a 2mm cutter head.
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