User`s guide

XG2N and Compute Modules
007-4701-003 7
Compute Module Rear Panel Items
Figure 1-6 shows a view of the rear panel of a Silicon Graphics Prism compute module.
Figure 1-6 Silicon Graphics Prism Compute Module Rear Panel With ImageSync
The rear panel of the module has the following items:
• AC power input. This connector connects the graphics module to an AC power
outlet.
• Console port. This DB-9 serial port (console and diagnostic port) enables you to
connect a system console to the L1 controller on the graphics module.
• L1 port (USB type B). This universal serial bus (USB) type B connector connects the
graphics module L1 controller to an optional L2 controller.
• NUMAlink connectors. These NUMAlink connectors are used to connect base
compute, XG2N, CPU expansion, or CMPX modules to each other or to optional
router modules. These connections are made with a NUMAlink cable at 3.2 GB/s in
each direction.
• NUMAlink LEDs. Each NUMAlink connector has a yellow LED and a green LED
(both located to the right of the NUMAlink connector). These LEDs provide
information about this specific NUMAlink connection:
– The yellow LED illuminates when this module and the module to which this
port is connected are both powered on.
NUMALINK 0 NUMALINK 1
PCI 1
PCI 2
PCI 3
PCI 4
L1 PORT
CONSOLE
CPU
Multi-port serial
connector
Ethernet port
CONSOLE
port
L1 portPower
connector
Bus 2, slot 1
PCI/PCI-X slots:
Bus 2, slot 2
(with USB)
Bus 1, slot 2
(with ImageSync)
Bus 1, slot 1
(with IO10)
NUMAlink connectorNUMAlink connector