D means that the product is rated in its category in terms of energy efficiency. The Energy Labeling system is based on EU Regulation 2017/1369/EU. D DELL E Series E2222HS, 54,5 cm (21.4"), 1920 x 1080 Pixel, Full HD, LED, 10 ms, Schwarz DELL E Series E2222HS. Bildschirmdiagonale: 54,5 cm (21.4"), Display-Auflösung: 1920 x 1080 Pixel, HD type: Full HD, Bildschirmtechnologie: LED, Reaktionszeit: 10 ms, Native aspect ratio: 16:9, Bildwinkel, horizontal: 178°, Bildwinkel, vertikal: 178°. Eingebaute Lautsprecher. VESA mounting, Höhenverstellung. Produktfarbe: Schwarz