Dell Alienware M17x R3 (Early 2011) - Manual (Page 106)

CHAPTER 7: SPECIFICATIONS
104
Computer Model
Alienware M17x-R3
Dimensions
Height
Front 44.5 mm (1.75 inches)
Back 45.0 mm (1.77 inches)
Width 410.0 mm (16.14 inches)
Depth 304.0 mm (11.97 inches)
Weight with 9-cell battery and
optical drive (starting at) 4.26 kg (9.40 lb)
NOTE: The weight of your laptop will vary depending
on the configuration ordered and the manufacturing
variability.