I really like this hub.  I have an Acer One Netbook, and I use this hub to power my cd/dvd external drive, my laptop cooler pad, and my 1tb external hard drive.  My cooler pad also has a few usb ports, and I have a 4-in-1 memory card reader plugged into that.  Everything works fine.  Sometimes I have to unplug my cd/dvd drive to get the netbook to read it properly.  I had that same problem with another hub though, so I think it's the drive.  It works more often with this hub than with my other though.