Maybe it works like the TurboCord which has a 5-15 that can attach an adapter to allow 240 volt charging? Perhaps the 14-50 adapter (in the top corner of the bag) plugs into the 5-15?Or maybe it's the other way around and that's really a modified 14-50 plug with one pin removed to allow it to fit in 14--30 outlets as well. That could be hardwired and the 5-15 adapter would be added to that?I have this extension cord from EVSE Adapters that allows you to plug into 14-50, 14-60 and 14-30 outlets. Yes, you'd have to adjust the amps accordingly.Also, it's hard to tell but it looks from that picture like the plug might detach directly from the UMC. The way it is sitting in the wrapped up cable, it doesn't look like the cable is attached on one end.