Rear Panel Components - Silicon Graphics Origin 3900 User Manual

7: R-brick

Rear Panel Components

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The R-brick has the following rear-panel components (see Figure 7-4):
• PWR (power) connector. This connector connects the R-brick to a power bay, which
provides 12-VDC and 48-VDC power to the R-brick.
• Power switch. Move the power switch to the
L1 controller within the R-brick, and to the
• 48-VDC and 12-VDC LEDs. The power switch must be in the ON (
these LEDs to be on. The 12-VDC LED illuminates green when the L1 controller is
powered on. The 48-VDC LED illuminates green when the rest of the R-brick
internal components are powered on.
• Links R TO R connectors (1, 6, 7, and 8, or A, F, G, and H). These link connectors
connect the R-brick to other R-bricks or Cx-bricks in the network fabric.
• Links R to R and C to R connectors (2, 3, 4, and 5 or B, C, D, and E). These link
connectors connect the R-brick to other R-bricks or Cx-bricks in the network fabric.
• Link connector LEDs. Each NUMAlink connector has two LEDs, as follows:
– The yellow LED illuminates to indicate that both the R-brick and the brick to
which it is connected are powered on.
– The green LED illuminates when a link has been established between the
R-brick and the brick to which it is connected.
• L1 port connector. This connector connects the internal USB hub of the R-brick to
the L2 controller. The internal USB hub receives the USB signals from the L2
controller via this port and distributes these signals to the internal L1 controller of
the R-brick.
position to power on the
1
position to power off the L1 controller.
0
) position for
1
007-4653-001