08:15
Tech
The T420 has a solid array of input and output ports. It's also worth noting the T420 has a docking station port on its underside - Lenovo sells several different models, all offering plug-and-play compatibility and connections to many more ports. This functionality is a feature of a true business notebook;lower-end "business" notebooks do not have them, nor do consumer models. All picture descriptions are left to right.The chassis strength is excellent; T-series Think Pads have strong internal frames that prevent flex. This is good for the internal circuit boards - the less they flex the better in the long term. The lid is securely anchored to the chassis via two metal hinges.Take the exterior plastics, for example. They have a matte texture which is scratch-resistant and does not show fingerprints/dust (as opposed to glossy plastic). The plastics are of good quality anddon't rattle when tapped by a fingernail.
The screen has 15 levels of brightness and ample contrast; the infamous Command Prompt window looks black with barely a hint of gray. Viewing angles are typical for a TN-type panel like this one; fine horizontally but with significant color distortion vertically. Nearly all notebooks come with TN-type panels.The T420's keys have precisely the right amount of travel to allow time for your finger muscles to realize a key is fully depressed; this is essential for fast and accurate typing. Additionally the spring mechanism (it's not actually a spring, but a scissor switch/rubber dome, but that's for another article) pops the keys back up immediately yet is stiff enough to let you rest your fingers on the keys.
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