System Board; Riser Board - NEC POWERMATE ES 5250 Manual

System Board

System memory, the processor, and the system battery reside
on the system board. The system board also comes with an
audio subsystem and a LAN controller, and it supports the
AGP standard.
See "Front Audio and USB Access" and "External
Connectors" for descriptions of external connectors.
The system board supports two diskette drives and up to four
IDE devices such as IDE hard drives, an IDE CD-ROM drive
or DVD-ROM drive, and an IDE Zip drive.

Riser Board

Most of the cable connectors in the system reside on the riser
board. Riser board connectors include:
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primary and secondary IDE connectors
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diskette drive connector
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front panel connector for lamp
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the NLX connector for the system board
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the external LAN connector
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power connectors
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additional connectors including the CD Audio In,
Modem In, Wake-On LAN, chassis intrusion (hardware
monitor), and fan connectors.
Expansion board connectors on the riser board are as follows:
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Small desktop models
one PCI connector
one shared PCI/ISA connector
1-16 Reviewing System Features