T420s is the smaller version of t420; still modular and much more portable. There were likely several versions of lcd panels with it - the t420s's I got were w

T420s is the smaller version of t420; still modular and much more portable. There were likely several versions of lcd panels with it - the t420s's I got were way better than the t480 and e580 I picked up recently, even though there's 6 years between them. I believe the ones I have are either 1920 x 1080 or 1600 x 900 (whereas the t480 is inexplicably only 1366 x 768 ; and e580 is 1080p but awful contrast or gamma or something)