Dell Studio 1555 Setup Manual page 90

Specifications
Touch Pad
X/Y position 240 cpi
resolution
(graphics table
mode)
Size
Width 73.09 mm (2.87‑inches)
sensor‑active area
Height 40.09 mm (1.57‑inches)
rectangle
88
Battery
Type 4‑cell "smart" lithium ion
(Studio 1555)
6‑cell/9‑cell "smart" lithium
ion (Studio 1555/1557/1558)
Depth 48.3 mm (1.9 inches)
(4/6/9‑cell)
Height 20.4 mm (0.8 inches)
(4/6‑cell)
37.8 mm (1.5 inches) (9‑cell)
Width 206.6 mm (8.13 inches)
(4/6‑cell)
284.9 mm (11.2 inches)
(9‑cell)