In the beginning I still wondered whether it would be worthwhile to bring a Blu-ray burner with USB3 support, however, quote from Wikipedia: "drives for use in movie playback are these with up to 1.6 times speed, ie 54 Mbit / s, operated "and even with a 12x BD drive is the data rate of" only "432 Mbit / s, USB2 with up to 480 MBit / s should be quite sufficient.
After a brief search, I came across the two-506AB Samsung SE and SE-506BB. I did not really understand whether there is a difference between the two models, and have chosen the SE-506BB because it was cheaper and also available directly from Amazon about 10.
In the package was a BD burner, a simple USB cable (USB 2.0 A-Male to Mini-B connector, High-speed, about 50 cm long, no Y-cable), and a disk with Windows software and User Manual, which I did not open.
After plugging the cable first nothing happens, only briefly illuminated the blue light on the BD drive, and only after you insert a BD, this appears in the Finder. No additional drivers or something is needed.
If no disc in the BD drive is, you can not see in the Finder, the external burner is connected, and only in the "System Information" (About This Mac -> System Report ...) under "Burn Media" looks one the following info:
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TSSTcorp BDDVDW SE-506BB:
Firmware Version: TS00
Connection Type: USB
Burn Support: Yes (general drive support)
Profile path: Without
Cache: 4096 KB
Read DVD: Yes
Recordable CD: -R, -RW
Recordable DVD: -R -R DL, -RAM, -RW, + R, + R DL, + RW
Recordable BD: -R, -RE
Writing Strategies: CD-TAO, CD-SAO, CD-Raw, DVD-DAO
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The BD drive works on each of the two USB ports on the laptop, both left with USB2, and USB3 with right, so no additional power supply.
Also playing a video BD went to the free Mac Blu-ray Player, but without BD menu, but that is a problem of the software, not the hardware. Incidentally, this is also an advantage compared to a "normal" Blu-ray player, as you neither annoying FBI evidence still have to look at advertising, but can directly start the movie :)
Firing I have not tried yet.