The X101CH was designed to be thin and lightweight, for maximum portability. Boasting a profile that’s less than one inch thick and weighing less than one kilogram, it easily slips into bags without adding much weight.
This Asus Eee PC has built-in memory modules, so if you want to upgrade the memory don’t ever try. The only thing you can upgrade in this Asus Eee PC netbook is the hard disk drive.
Asus Eee PC X101CH – Keyboard and Hard disk Drive Location