[NAME]  and [NAME]  I have a Pioneer BDR-XD06J-UHD, which works fine.  And it can be powered from a single USB 3.0 port, at least the ones built into my laptops, although it does include a "dual USB" plug in case you plug it into a USB 2.0 port because USB 2.0 only requires 500 mA to be provided, whereas 3.0 requires 900 mA.
Is there a Dell-recommended external 4K Blu-Ray player for my new XPS 15 7590? I cannot get two different Blu-Ray players to work with it, both give me a "USB malfunction. Device Not Recognized" error number 43. One of the main reasons I bought this 4K laptop was to play concert 4K blu-ray discs. Brian
4K Blu-Ray player for XPS 15 7590