"We were very eager to test Lenovo ThinkPad X301: Lenovo's best in class of ultraportable notebooks. Although it looks almost the same as older brother X300 , Lenovo has hidden new features under the hood. Manufacturing quality is, as expected, at very high level despite the fact that notebook looks very fragile because of its height (thickness or better - slimness). Design of Lenovo ThinkPad X301 follows the same business philosophy that was established by IBM, although we would like to see some advances in that department. Chassis is made of magnesium alloy and in combination with roll-cage made of carbon-fiber results in notebooks rigidity and low weight. Unusual for this class, there is optical device and along with DisplayPort connector those two are main external differences compared to ThinkPad X300."