After I bought the first stroke and a 60mm hole specially've drilled into my desk for installation, unfortunately I had to realize that worked neither my 3 different external USB3 disks, nor an external CD-ROM attached to a hub. Instead, the HUB in the MAC was only recognized as a USB2 hub. Then I thought that either the external power supply and / or the HUB itself is not working and called for an exchange of AMAZON on. As usual, it all went off very quickly and easily, and a few days later, I installed a new device, and lo and behold, at least one external hard drive running without in between to pass. BUT: Again only the USB2 mode and 2 additional hard drives, and the CD-ROM functioned unfortunately not. Too bad! Now I have a hole in the desk and no HUB! By the way, someone should want to buy the HUB anyway, looks indeed chic, please no drilling 60mm hole (as indicated), as this is actually too big. You can adjust the scope while then taped, but I think 58mm would actually be correct. (Of course, no guarantee)
