Hollyland HL 4-Pin XLR Power Adapter

Four-pin XLR is the standard DC connector on a broadcast trolley, and it is what the Solidcom M1 Pro beltpack charging base expects on its power input. This is the Hollyland adapter that supplies it: an IEC mains inlet, a sealed brick, and a locking 4-pin XLR output on a captive lead.

It ships as an accessory rather than in every box, so a second charging base or a replacement for a supply that walked off a truck needs one of these ordered alongside. Hollyland part number HL-4Pin-Adpt.