Very happy with this burner. Totally compatible with my new iMac. Has secondary USB plug attached. But, if you use it with only the single USB 3.0 plug, it works just fine. Free Mac Blue-ray player software is available online that lets you play your Blue-ray discs on your iMac with this drive. Silver color compliments iMac very well. Sits below the screen and there's plenty of room to load discs in an out. Nothing but positives so far.

Overall, this is a great device. It's quiet, fast, and reads DVD's and Blu-ray discs perfectly. There's only two reasons I'm giving it 4 stars instead of 5: 1. The cord is way too short. Seriously, a 12" cord is almost useless. I bought this for my desktop computer - luckily, I literally keep my PC on top of my desk, and the cord is barely long enough to reach from the USB port to the desk. 2. The drive requires TWO USB ports to work properly - one USB 3.0 and one USB 2.0. Computers these days are short on USB ports the way it is, and I was planning to use this as a semi-permanent addition to my computer. However, since it hogs two USB ports, I'll have to disconnect it occasionally as I need to use other accessories. Other than that, I've had no problems with it whatsoever. I use it to rip DVD's and Blu-ray discs to my hard drive, I've got almost 20 hours straight of continuous use at full speed out of it so far and it hasn't skipped a beat. For those who rated this drive 1 star because software isn't included - it says on the box that software isn't included, don't blame the drive because you didn't read the package. This is an excellent Blu-ray/DVD drive, but finding software to play Blu-ray movies is your responsibility -- not Pioneer's.

The Pioneer BluRay disc burner is easy to use, compact enough to carry in my backpack, and burns discs perfectly, every time. It’s fast, works well with my MacBook Pro, and with my Toast Titanium software. If you need a BR burner & player for your Mac computer, or just the smallest configuration for portability, this Pioneer drive is an easy choice to make. Great price point, too!

An excellent optical drive, portable and easy to use with both Mac and PC. Reads old discs that I thought were shot. Does vibrate a bit at high speed.

So far, this unit has played back DVDs very well. On an iMac, I downloaded a few free BluRay players and finally settled on software from Leawo which works well without any watermarks. Have not burned discs yet, but believe that won't be an issue after reading other reviews. I would have given this 5 stars, but it is quite loud during operation. Also, obtaining the proper driver was initially a headache since the Pioneer site would not let me download on the first 2 tries; 3rd time was a charm. Another issue is the bulky micro-USB connector at the back of the unit. However, swapping it with a cable from an external HDD allows it to fit nicely on the iMac's pedestal without hanging over, taking up desk space. (an L-shaped OEM connector would have been nice) Overall, it's working well and does what it is supposed to.