I use this on a PC, but note that new Mac OS (formerly OSX) updates cause problems with USB to HDMI/VGA/DisplayPort adapters (limiting to clone mode).On my PCs this works great as an added screen. It lacks any of today's modern acceleration, but it can throw pixels on the screen quite nicely. For office tasks it simply works, and it's not a bad idea for any road warrior to have something like this in their bag to assure they can present or whatever. Installation is a breeze.These generally work the same (one company makes the chips/drivers), but this particular model does offer a great price. I'd still go with one that adds a USB hub, as most laptops that need one of these, also need more USB ports (for a mouse and keyboard. Thus 4 stars.