v You must install a passthru card in a microprocessor/memory card slot to support
some microprocessor/memory card configurations. See Table 3 for the passthru
card installation requirements.
Table 3. Passthru card installation requirements
Slots populated with microprocessor/
memory cards
Slot 1
Slot 1 and slot 2
Slot 1, slot 2, and slot 3
Slot 1, slot 2, slot 3, and slot 4
v All 6 fans must be installed to support some microprocessor/memory card
configurations. See Table 4 for the fan requirements.
Table 4. Fan requirements
Slots populated with microprocessor/
memory cards
Slot 1
Slot 1 and slot 2
Slot 1, slot 2, and slot 3
Slot 1, slot 2, slot 3, and slot 4
1
2
3
Passthru card requirement
Slot 2
None
Slot 4
None
Fan requirement
Fans in locations 1, 2, and 5
Fans in locations 1, 2, and 5
All 6 fans
All 6 fans
4
Chapter 2. Installing options
15
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