Figure 8-3 L2 Controller Connectors - Silicon Graphics Origin 3900 User Manual

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The printed circuit assembly (PCA) of the L2 controller is housed in a sheet metal box
that is 1U high and is located at the top of the rear of the racks that contain Cx-bricks
and/or R-bricks. (It does not use configurable rack space.) The L2 controller has the
following connectors:
• Power connector connects to a power bay.
• RS-485 connector is not used.
• Two RS-232 ports (DB-9): one port can connect to a console and the other port can
connect to a modem.
• 10BaseT Ethernet port can connect to an Ethernet hub.
• Rack display port can connect the rack display.
• Four USB ports can connect to R-bricks and/or Cx-bricks (directly or via USB
hubs).
Figure 8-3 shows the connectors at the rear of the L2 controller.
PWR
L2 Controller Connectors
Figure 8-3
Console
Modem Ethernet LCD Display
ICMB
L2 System Controller
1 2
4
3 Fault
L1 Ports
L2 Controller
117