I was really pleased with this item when I first bought it: Fonseca delivered it promptly and when I unwrapped it, inserting it into my MacBook Pro couldn't have been simpler. I really LOVED not having to find the card reader in order to download images from my SD card and being able to insert it directly into my computer meant one less bit of kit to have to take when travelling.
However, the unfortunate side effect took a couple of days for me to notice and that was that once this was inserted, my computer wouldn't go to sleep. When I close the lid down on my MacBook Pro, it should go to sleep and to demonstrate this the little apple goes dark only lighting again when the computer is reactivated by lifting the lid. I noticed that after inserting the kinsington 7-in-1 Media reader, the apple would go dark for a moment but then relight, sometimes for minutes at a time or would flicker on and off. This would make the the laptop overheat and sometimes it would get very hot. The only way to get it to close down was to power down completely, fine at night but not very handy when I just wanted to have a quick break. In the end, I had to remove the card reader and my computer reverted to normal.
So now I'm back to using a card reader in the USB port. Ah well. :-(