This one's a bit more obvious. Roughly 0.7 inches long. I had to make a change to how zombie recovery was handled in hardware once I got the firmware written, which necessitated a change to the PCB. So I still have all the previous not-as-good PCBs, which can be exactly as functional with the aid of two trace cuts and a jumper wire. But if we can use those, it basically doubles how many I can sell before a restock of PCBs arrive.