I have a Toshiba netbook and find the "sleep charge" port to be a big help when my smartphone starts to peter out during a long conversation (just plug it into the charging port and leave it in my bag, with the netbook, while I talk on the Bluetooth headset). Always had about 5 hours of juice left, more than enough to do my computing. This is defiantly unique because the computer can do this while completely powered off, and drawing no power. I tried to do the sleep mode thing with another laptop because my phone needed a boost, and the computer became very hot while in my bag, and was almost depleted when by the time my phone was charged. To the best of my knowledge, Samsung also offers this feature on a few of their netbooks, and notebooks. BTW I have owned this netbook for about a year.