Yes, OWC does in fact make such Blu-ray drives for Macs.
If you just want read (not write) support for Blu-ray disks, there’s the OWC Slim 6X Portable USB 2.0 Blu-ray Reader.
If you want both read and write support for Blu-ray disks, there’s the OWC Slim 6X Portable USB 2.0 Blu-ray Burner.
Keep in mind they use a USB 'Y'-type cable, so you’ll need two available USB ports if you want to power the drives without a separate power adapter.
EDIT: After checking around a bit, it seems like while the above drives include a USB 'Y'-type cable, it doesn’t necessarily mean they actually require a USB 'Y'-type cable:
“most give you the option for 2 incase you have a low power USB port,
with newer macs you probably don't need to use the second port.
i've got an older asus external, and it works fine on one port on my
retina mpb”
and
“I chatted with OWC about this
one tonight and they
said that it should work fine on one plug in most situations.
Unfortunately, they also confirmed my fear that if it did need the
second plug for some reason, you'd be SOL because the Y-split only
provides a short length of chord for each plug.”
Of course, as you noted, the issue of the Y-cable’s length can be solved with an extension cable. The only remaining issue (well, not including your USB 3 requirement) would be if the USB ports on your Retina MacBook Pro provide enough power so that you’d only need one of them. According to this page, the OWCMRSSBD6X-series (the two Slim drives I mentioned above) have a power draw of 6.3 W.
Apple has an extremely useful and detailed page here detailing how much power is provided by a Mac’s USB ports:
Apple computers and displays with USB 1.1 or USB 2 ports provide:
- Up to 500 mA (Milliamps) at 5 V (Volts) (that’s 2.5 W of power per port (5 V × 0.5 A = 2.5 W)) to most Apple USB peripherals and all
USB peripherals not made by Apple in compliance with USB
specifications.
Apple computers with USB 3 ports (using USB 3
cables) provide:
- Up to 900 mA (milliamps) at 5 V (Volts) (that’s 4.5 W of power per port (5 V × 0.9 A = 4.5 W)) to most Apple USB peripherals and all
USB peripherals not made by Apple in compliance with USB
specifications.
Note: Some USB peripheral devices not manufactured by Apple may have
unique power requirements. These may exceed the power allotment on an
individual USB port. Those devices may require you connect them to
multiple USB ports or may have external power sources that must be
present for them to function.
Apple peripheral devices may request more than 500 mA (Milliamps) at 5
V (Volts) from a port to function or to allow for faster charging.
Such Apple peripheral devices include:
- Apple MacBook Air SuperDrive (when connected to supported computers)
- Aluminum Wired Keyboard*
- iPod
- iPhone
- iPad
To meet requests for additional power from these Apple peripherals and
devices, some Apple computers and displays can provide up to 1100 mA
at 5 V (that’s 5.5 W of power (5 V × 1.1 A = 5.5 W)) through the
port to which the Apple peripheral or device is connected.
(That certainly explains why Apple’s External SuperDrive can be easily powered by just one port!)
Based on that, it seems like it would be impossible to power OWC’s Slim drives with just one USB port. In fact, I’m kind of curious how it can even be powered with two! Considering it’s supposed to be a USB 2.0 device, it should only come with a USB 2.0 cable (as mentioned in this Apple FAQ, you need to be using USB 3 cables (with USB 3 peripherals) to get the 400 mA increase in current over USB 2.0 cables). Considering that using two USB 2.0 ports will only provide 5 W of power (2.5 W from each port) while the OWC drives mentioned above require 6.3 W, I don’t see how they can be bus-powered (at least under USB 2.0).
I’ll contact OWC to find out what the discrepancy is (could be as simple as having a typo on their knowledge base page showing the power draw), but hopefully, the rest of the information here can help narrow your search down considerably.
