Acer TravelMate 4020 - Manual (Page 16)

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Environment
• Temperature:
-
Operating: 5°C ~ 35°C
- Non-operating: -20°C ~ 65°C
• Humidity (non-condensing):
-
Operating: 20% ~ 80% RH
- Non-operating: 20% ~ 80% RH
System
• Microsoft® Windows® XP Home/Pro
• ACPI 1.0b support
• DMI 2.0-compliant
• Wi-Fi®-compliant
Power
• 8-cell (65W) or 4-cell (32W) Li-ion battery pack
• 65W AC adapter 19V 3.42A
Options
• 256MB/512MB/1GB memory upgrade module
• Additional 65W AC adapter
• Addition Li-ion battery pack
• Additional hard disk
• USB floppy drive
Note: The specifications listed above are for reference only. The
exact configuration of your PC depends on the model purchased.