Often times the thought of buying an after market laptop adapter doesn't even cross your mind until your current adapter gets lost or broken. It likely wouldn't cross many people's minds that an after market adapter, generally a pretty simple product, may bring some added convenience over their stock adapter. An after market adapter may be used as a second adapter, say to leave on your desk at work so you have less to carry back and forth. It may also be smaller and more compact than your stock adapter - making travelling lighter an added convenience. Or, perhaps you may find a benefit from a built-in USB port on your adapter. The GlacialPower AC90N does just the above and more, as a compact and highly affordable after market laptop adapter.