This is a technical research report regarding the (often referred to as the Acer Aspire One D250 or ZG5 variant, depending on the regional motherboard labeling). The model number "KAV60" typically refers to the motherboard/codename for the 10.1-inch netbook series running Intel Atom N270 or N280 processors.
If you see an "Unknown Device" in Device Manager, it is likely the Card Reader (usually Ricoh or Realtek) or the Webcam . acer aspire one kav60 drivers