Rear Panel Components - Silicon Graphics Origin 3900 User Manual

6: X-brick

Rear Panel Components

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The X-brick has the following rear-panel components (see Figure 6-3).
• Power switch. Moving the power switch to the
controller of the X-brick, and moving it to the
controller.
• 12-VDC LED. The 12-VDC LED illuminates green when the L1 controller is
powered on.
• 48-VDC LED. The power switch must be in the ON (
illuminate. The 48-VDC LED illuminates green when the rest of the X-brick internal
components are powered on.
• PWR (power) connector. This connector connects to a power bay, which provides
power to the X-brick.
• XIO card slots. These slots seat the XIO cards. The slots are numbered 1 through 4
as shown in Figure 6-3. Each slot can seat one XIO card with power levels up to
50 W.
Warning:
To avoid personal injury or damage to your system, only qualified SGI
system support engineers (SSEs) can install and replace XIO cards.
• XIO 10 and XIO 11 connectors. Each connector can connect the X-brick to one IP53
node board. As an option, the second connector can connect to another IP53 node
board to create a dual-ported X-brick, which provides greater bandwidth.
• XIO 10 and XIO 11 connector LEDs. Each connector has two LEDs, as follows:
– The yellow LED illuminates to indicate that both the X-brick and the IP53 node
board to which it is connected are powered on.
– The green LED illuminates when a link has been established between the
X-brick and the IP53 node board to which it connects.
position powers on the L1
1
position powers off the L1
0
) position for this LED to
1
007-4653-001