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Camera cable or charging cable issue.
The two most common issues we see with camera cables are 1) plugging it into the wrong side of Arsenal and 2) trying to insert the plug upside down.
Arsenal’s left port is for the camera cable only. The right port next to the power button is for charging only.
Orientation matters for both cables -- the plug’s “teeth” should face down.
This article helps with other common cable issues: https://support.witharsenal.com/supported-cameras-and-mobile-devices/camera-cable-troubleshooting