Nighthawk M6 Pro MR6400 won't run without battery when tethered to computer

Hello,

I recently purchased the Nighthawk M6 Pro MR6400 hotspot. Unlike the MR5200 and MR6500, it does not seem to want to power on without the battery connected when tethered to a PC.

I checked all of the settings in all three hotspots and they are identical. The USB port is set to charging and tethering. The same exact PC and USB-C port on my PC works for the MR5200 and the MR6500, but will not work for the MR6400.

Is there a way to bypass this? I have checked the power settings of the device and they appear to be identical. I am purposefully not installing the battery except for when I will be traveling with the device.

Thanks!