Adding Options 5-3
■ Processor upgrades
A zero insertion force (ZIF) socket on the system board
supports primary processors, such as 486DX2 and DX4
processors, and OverDrive processor upgrades.
See your authorized NEC dealer for assistance in
determining which processor is best for you.
!
CAUTION: Incorrect installation of the
processor chip can damage the system board, the chip,
or both. See “Chip Upgrades” in this chapter for
detailed information.
■ External options
External peripherals, such as state-of-the-art printers,
are compatible with your system.
See the following sections for specific information and
guidelines on installing options in your system.
SAFETY PRECAUTIONS
Take care when you work inside the system and when
you handle computer components. Avoid electric shock or
personal injury by observing the following warning.
!
WARNING: Before you remove the
system unit cover and work inside the unit,
turn off
all system power and
disconnect
the system and its
peripherals from their power sources.
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