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76 Appendix A Specifications
System Clock and Battery
Your computer has CMOS custom circuitry with a long-life battery.
Battery
Use a 3 V, CR 2032 Lithium coin cell replacement battery (see “Replacing the Internal
Backup Battery” on page 50).
Dimensions and Operating Environment
Dimensions
 Weight: 19.2 kg (42.4 lbs.)
Weight depends on configuration. The weight above is for a basic configuration and
may be greater if optional devices are installed.
 Height: 511 mm (20.12 in.)
 Width: 206 mm (8.11 in.)
 Depth: 475 mm (18.70 in.)
Operating environment
 Operating temperature: 10° to 35° C (50° to 95° F)
 Storage temperature: –40° to 47° C (–40° to 116° F)
 Relative humidity: 5% to 95% (noncondensing)
 Altitude: 0 to 3048 meters (0 to 10,000 feet)