ASUS Zenbook Prime is one of the ultrabooks that managed to score buyers, despite display problems.
It so happens that some buyers want to keep the laptop around for longer than half a year. That means that the hardware may become insufficient at some point in the future.
Ultrabooks are made to be thin and light, which means that they don't exactly have much room to add things.
Fortunately, the Zenbook Prime has an advantage in that it can be taken apart by anyone with a standard toolset.
According to the folks at iFixit
, the 5,400 RPM hard drive may be the first thing owners want to change, even though the mini SSD used for caching ensures a high performance anyway.
The other replaceable hardware part is the memory. Zenbook Prime has 4 GB, but it should be simple enough to go above that capacity.