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Model ELK-PFM-B5XUSB, Professional Trackball Mouse (For USB)
1. Scope
This specification describes the functional, physical, and environmental characteristics of the USB(Universal Serial Bus) Professional Trackball Mouse.
2. Functional Specifications
2.1 Resolution 192 to 576 pulses per revolution of the ball.
2.2 Input Switches Six (6)
2.3 Interface Universal Serial Bus
2.4 Connector USB Type A
2.5 Pin Assignments Pin 1 = +5V, PC1
Pin 2 = -Data, PC3
Pin 3 = +Data, PC2
Pin 4 = Ground, PC1
2.6 Compatibility HID 2.0
2.7 OS Certifications Microsoft Windows 98/2000/XP
2.8 Switches Mechanically limited, break resistent
2.9 Cable 66"+-0.5", double shielded, 100% coverage
2.10 Power Consumption  
3. Mechanical Specifications
3.1 Dimensions Approximately 4"wide x 8" long
3.2 Weight 1.3 lbs
3.3 Body Material ABS, grey
3.4 Ball Material Cast Phenolic Resin
3.5 Ball Hardness Rockwell H 85
3.6 Tracking Force 1.5 oz. maximum, 0.5 oz. typical (15g)
3.7 Ball Load 25 lbs. maximum downward
3.8 Ball Speed 500 RPM maximum
3.9 Hand Pad Injection-molded vinyl, grey
4. Environmental Specifications
4.1 Operating Temperature 0 to +50¡É
4.2 Storage Temperature -20 to +60¡É
4.3 Humidity 0 to 95% non condensing
5. Accessories: None
6. Packaging
Each unit is packaged in an individual, protective container which may display a bar-coded label of the customer's specification
7. Special Features: None