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.
Summary of Contents for POWERMATE V486 - SERVICE
Page 31: ...1 18 Using Your Computer Minitower fax modem jacks ...
Page 35: ...1 22 Using Your Computer Keyboard supports Keyboard features U S model ...
Page 47: ...1 34 Using Your Computer Loading a CD into the desktop Loading a CD into the minitower ...
Page 131: ...Adding Options 5 15 Removing the screw in the minitower ...
Page 148: ...5 32 Adding Options Locating the cache sockets in the minitower ...
Page 166: ...5 50 Adding Options System board cable connectors in the desktop ...
Page 167: ...Adding Options 5 51 System board cable connectors in the minitower ...
Page 179: ...Adding Options 5 63 Securing the device ...
Page 192: ...5 76 Adding Options Connecting an RS 232C cable to the minitower ...
Page 195: ...Adding Options 5 79 Connecting speaker components ...
Page 200: ...5 84 Adding Options Connecting a telephone line to the desktop ...
Page 205: ...6 4 Setting System Board Jumpers JP3 through JP9 J9 JP11 and JP21 through JP23 jumpers ...
Page 251: ...Sound Board Jumper Settings D 3 Sound board jumper locations and functions ...
Page 255: ...Sound Board Jumper Settings D 7 High DMA channel settings ...