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The following illustration shows the location of the expansion slots and other
components referred to in these steps.
PCI slot LED descriptions
Each PCI slot has two lights associated with it — one Attention/Fail light and one
Power On light.
10
xSeries 370 Installation Guide
1 Midplane connector
2 I/O function card slot
3 Voltage regulator module (VRM) connectors
4 Advanced System Management PCI adapter slot
5 USB 1 and USB 2 port connectors
6 PCI switch card connector
7 Hot-plug, 64-bit, PCI slots 10–12 (bus A, 33 MHz)
8 Hot-plug, 64-bit, PCI slots 8–9 (bus B, 66 MHz)
9 Hot-plug, 64-bit, PCI slots 6–7 (bus C, 66 MHz)
1
Hot-plug, 64-bit, PCI slots 1–5 (bus D, 33 MHz)
11 Hot-plug external attention/fail LED for PCI slot (green blink = attention,
amber = defective PCI adapter)
12 Hot-plug internal attention/fail LED for PCI slot (green blink = attention,
amber = defective PCI adapter)
13 Hot-plug power LED for PCI slot (green solid, on)
Power On Light: This light is on when the PCI slot is active and has power.
Do not add or remove an adapter from the PCI slot when the Power On light is
on. When this light is off, the PCI slot is inactive and has no power applied.
You can install or remove an adapter when the Power On light is off. Refer to
your operating-system documentation to determine if your operating system
supports hot-plug PCI adapters.
Attention/Fail Lights: These are bicolor lights. When an Attention/Fail light
flashes green, it indicates the PCI Hot-Plug Attention function. The meaning of
the Attention light is defined by your operating system. Refer to your
operating-system documentation to determine if your operating system supports
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