The BP50NB40 is powered solely via USB. A spinning Blu-ray motor requires up to of current. A standard USB 2.0 port provides only 0.5A; USB 3.0 provides 0.9A.
I can provide specific steps to get your drive working perfectly. lg bp50nb40 driver
The LG BP50NB40 is one of the most popular external slim portable Blu-ray drives on the market. It is praised for its sleek design, USB-powered convenience, and ability to read and write M-Discs. The BP50NB40 is powered solely via USB
You cannot do this. LG patched the bootloader in hardware. No driver or firmware will enable UHD reading. lg bp50nb40 driver