I used to work on OSes, so I knew it'd need to be partitioned and formatted. I plugged it into MacOS, and it wasn't recognized the first time, but on the second time, it came right up. I started Disk\ Utility, created appropriate partitions, and formatted it as a MacOS volume. Worked great.The wording on the page has changed since I tested this a few months ago. I tested it first on a 2012 iMac, which I knew had only USB 3.0 and didn't expect a prize. I then tested on both my Macbook Pro and then another iMac, and both got way below 20 Gbps. These were both M1 generations of machines, and I now realize both that these are 10Gbps USB 3.1Gen2 (man, do they need a person in charge of names) and that their USB implementation is a bit underachieving. Based on that, I was able to verify only that this drive could run faster than any computer I had could drive it to. (That will change later in the year when I'm able to attach it to an M4 and hope to retest.)So for me, the drive performed as expected, though I had to reset my expectations as I thought the M1s could drive 20Mbps USB and they just can't. I don't know why my older Macs had Thunderbolt of an earlier generation, but the M1 never presented as a Thunderbolt device.I would consider docking the drives a half point just for cosmetic reasons. The candy red, high-gloss nature, and oversized branding logo really does look like some 1950's Googie design that should have been made of bakelite or something. It's...not fitting with contemporary office aesthetics. It looks more like a candy box than the drive that holds half a TB of data. :-)I will try to retest the performance on this with an M4 once it arrives in Dec 2024.Summary: While I see some reviewers sad that their 10Gbps systems won't light up a 20Gbps drive to capacity (I'm one of those surprised users), that's hardly the drive's fault. I was able to format and use mine effortlessly on MacOS, and it's still crazy fast. It's a little longer, but about as large in the other two dimensions as a deck of cards, so given the size, capacity, and speed range of this product family, you should be able to find a shirt-pocket compatible drive at a good value.Just consider covering it with a sticker or something if that bright red bothers you, too. :-)