Dell UltraSharp U2412M User Manual page 40

N OTE: The st and ext ends vert ically up t o 115 m m . The figure below illust rat es how t o ext end t he st and vert ically.
Rot a t in g t h e M on it or
Before you rot at e t he m onit or, your m onit or should be fully vert ically ext ended ( Vert ical Ext ension ) and fully t ilt ed ( Tilt ) up t o avoid hit t ing t he bot t om edge of t he m onit or.