Manual

7-2 Installation and Troubleshooting Guide
Figure 7-1. System Board Features
Expansion Cards
Expansion cards are installed on the system’s riser board (see Figure 7-2). The riser
board plugs into the RISER connector on the system board (see Figure 7-1) and is
considered an extension of the system board.
The riser board contains three full-length 32-bit, 33-megahertz (MHz), Peripheral Com-
ponent Interconnect (PCI) expansion-card connectors. All three expansion card
parallel port connector
(PARALLEL)**
primary microprocessor
(PROC_1)
DIMM sockets
(DIMM_A–DIMM_D)
power input connector
(POWER3)
chassis intrusion switch con
-
nector (INTRUS1)
hardware key connector for
optional RAID controller
(RAID_KEY)**
Universal Serial Bus
(USB) connectors (2)*
network interface
connector (ENET)
video connector (VGA)*
battery connector
(BATTERY)
DIMM socket for optional
RAID controller
(DIMM_RAID)**
configuration jumpers
SCSI backplane board interface
cable connector (BACKPLANE)
U160/m SCSI connector
(SCSI1 [Channel A])**
PCI riser board
connector (RISER)
U160/m SCSI connector
(SCSI2 [Channel B])**
interposer board interface
cable connector (I/O CONN)
power input connector
(POWER1)
keyboard and mouse
connectors (KYBD/
MOUSE)*
serial port
connector (COM1)
(administration port)
secondary microprocessor
(PROC_2)
serial port connector
(COM2) (UPS port)
* not used during normal operation
** not supported
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