OverviewThis is a Penny & Giles Roller Trackball Plus, designed as an alternative input device for users who may have difficulty with a conventional mouse, compatible with PS/2 systems.What's Included

• Penny & Giles trackball with attached PS/2 cable
• Clear plastic protective cover

ConditionThe trackball unit is beige with a blue trackball and grey buttons. The clear plastic cover shows some scuffs and dust. The main unit also exhibits general cosmetic wear and dust consistent with a used item. The cable is grey and appears intact. The bottom label is present and legible.Testing NotesThis item was not tested for functionality. The seller noted that something sounds loose inside the unit. No power cord is included as it is a passive input device.Specifications

• Brand: Penny & Giles (also marketed as Traxsys / Esterline)
• Model: Roller Trackball Plus (also known as Roller II)
• Connectivity: PS/2 (via attached cable)
• Trackball Diameter: 63.5 mm
• Buttons: Yellow (Left Click), Blue (Right Click), Green (Drag Lock), X-Y switch, Speed Control
• Dimensions: 21.5 cm (Length) x 13.4 cm (Width) x 6.7 cm (Height)
• Case Material: ABS Plastic
• Cable Length: 2 m
• Resolution: 1080 edges/revolution
• Supply: +5V DC +/- 5% 50 mA MAX
• Features: Latching drag switch, speed control key, X-Y movement lock, captive fasteners for mounting