A black box is shown with it's dimensions being 5 x 4.5 x 1.3mm.
A black square product that measures 5.0 mm x 4.5 mm x 1.3 mm
Hard drive to a computer which is 4.5 mm by 5.0 mm by 1.3 mm.
a diagram of a box showing different 'mm' numbers
A black box has measurements on each side such as 5.0 mm for the left side.