Buffalo released in Japan a re-badged BU40N, which is very stable and recommended.

Somewhere in 2016, new LG official UHD drives, implementing AACS2 protection, started with BU40N and BU50N. There will be a workaround for it in the near future. Most of the friendly drives have a bug: once the UHD disc is in, but it's not used for more than 2 minutes, the drive goes in standby mode and then it will not read the disc anymore.The easiest is to eject and re-load the disc. The best of this batch is the USB 3.0 drive called BE16NU50, recommended. To buy safer, just look outside North America and find the same drive sold as BH16NS55. Because Asus is re-badging LG drives, they also got the update.So new drives of those older models are compatible with DeUHD (see the list below). In 2015, some LG drives got a new hardware design, a new front (bezel) and started to 'see' the content of UHD discs: those were WH16NS40 and BH16NS40, with SVC NS50 on the label.They did not implement AACS2 protection, but they're good enough to work with DeUHD tool, called them UHD friendly. 4K UHD Blu-ray disc is a new type of Blu-ray disc that is not compatible with old drives (made before second half of 2015), just like BD XL didn't work with non XL drives.

Lg wh16ns40 software linux uabuntu