Specifications
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Following are the specifications for the Logitech PS/2 standard mouse.

Feature Description
Power
  • Supply voltage: 4.5 V min., 5.0 V typ., 5.5 V max.
  • Supply current: 20 mA typ., 25 mA max.
    		•
    Tracking Resolution 15.7 dots per mm (400 dots per inch)
    Tracking Performance At 6 in per second, on a length longer than 2 inches on a smooth surface
  • Accuracy: ± 15%
  • Orthogonality: ± 10%
  • Hysteresis: ± 10%
  • Backlash: ± 2%
    		•
    Interface Protocol PS/2
    Mouse Buttons
  • Actuation force:
    • Minimum: 0.2N (20 gf)
    • Typical: 0.6N (60 gf)
    • Maximum: 1.0N (100 gf)
  • Travel distance to click:
    • Minimum: 0.3 mm
    • Typical: 0.5 mm
    • Maximum: 0.7 mm
    • Wheel Button
  • Ratchet force:
    • Minimum: 0.1N (14.3 gf)
    • Typical: 0.2N (22.4 gf)
    • Maximum: 0.3N (30.6 gf)
  • Activation force:
    • Minimum: 1.5N (153 gf)
    • Typical: 2.0N (204 gf)
    • Maximum: 2.5N (255 gf)
  • Rotation travel per ratchet: 3.27 mm typ.
  • Number of ratchet steps/ revolution: 24 rats/rev typ.
  • Maximum rotation speed: 48 rats/sec typ.
  • Protrusion at free position: 3.0 mm typ.
    		•
    Dimensions (H × L × W) 37.5 × 121.0 × 62.0 mm
    Weight (With Cable) 132 g
    Cable Length 1850 mm typ.
    Ball
  • Weight: 26.0 g typ.
  • Diameter: 22 mm typ.
    • Temperature
  • Operating: 0° C to 40° C (-32° F to 104° F)
  • Storage: -20° C to 60° C (-4° F to 140° F)
    		•
    Humidity (operating & storage) 10% to 90%, non-condensing