Figure 2-20 I/O board module indicators
1. PWR LED
This LED lights up when the PCI Express adapter mounted on the I/O
board module is live.
2. ATN switch
Use this switch to power on the PCI Express adapter mounted on the I/O
board module.
3. LID LED
This LED identifies the I/O board module. You can turn this LED on or off
from the management module. You can use this LED to easily identify the
location of the target I/O board module.
4. ATN LED
This LED lights up if a failure occurs in the I/O board module or on the
mounted PCI Express adapter.
Mezzanine card installation locations and corresponding I/O board
modules
• PCI Express path-through mezzanine cards installed in mezzanine card
slots 2 and 4 of a full-wide blade correspond to the PCI Express adapters
mounted on an I/O board module.
• The table below lists the slot numbers of a full-wide blade, and the
corresponding slot numbers of an I/O module.
Table 2-5 Full-wide blade slot numbers and corresponding I/O board
module slot numbers
Full-wide blade
slot number
Installation number of
mezzanine cards
Corresponding I/O board module
slot number
1 2 01A, 01B
4 02A, 02B
3 2 03A, 03B
4 04A, 04B
5 2 05A, 05B
4 06A, 06B
7 2 07A, 07B
CB 2500 Appearance
2-17
Hitachi Compute Blade 2500 Series Getting Started Guide
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