QNAP NAS - Prošnja

Get the lid from a BIC pen.
Get a 5mm allen key

Gently heat the plastic BIC pen lid until it begins to soften. From the wide opening side of the BIC pen lid, push the the allen key through until it pushes through the narrow point. Remove the allen key from the BIC pen lid and wait until it hardens again. The BIC pen lid will now fit into the lock on your NAS. Twist it clockwise and the lock will open. I have tried this on both bays on my TS-239 Pro II + and it works.