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Intel
LB440GX 2U Rack Server Chassis TPS Rev 1.0
8 Dual-Slot PCI Riser
The Intel LB440GX employs a dual-slot PCI riser, which provides two full-length 32-bit/33Mhz PCI.
The riser is an active riser due to the extra PCI Bus Bridge on the card. The riser resides in PCI slot
number 5 of the Intel L440GX+ server board.
PCI Slot5
Note: The Intel L440GX+ baseboard provided in the Intel LB440GX system contains 6 PCI slots
and 1 ISA slot. PCI Slot 5 contains the PCI Riser Card. The other slots are inactive and should not be
used. Any (up to two) PCI cards in the system should be inserted in the slots on the PCI Riser card.
9 Chassis Interconnection
9.1
Chassis Internal Cables
Front panel board to hot-swap backplanes
A four-pin connector connect the front panel board to the second hot-swap backplane to
§
transfer drive activities to the LED indicators of drives 3 and 4.
A four-pin connector connects the front panel board to the first hot-swap backplane to
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transfer drive activities to the LED indicators of drives 1 and 2.
Front panel board to server board
A two-pin connector cable provides Power On/Off function.
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A four-pin connector cable connects the server board to the front panel board to provide
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server board power status.
P_INT_B <- INT_A
P_INT_C <- INT_B
P_INT_D <- INT_C
P_INT_A <- INT_D
Primary PCI
TI PCI
Bridge
PCI2031
32Bits/33MHz
IDSEL 20
P_INT_A <- INT_A
P_INT_B <- INT_B
P_INT_C <- INT_C
P_INT_D <- INT_D
Figure 8.
Active PCI Riser Block Diagram
Slot 1 (Upper Slot)
IDSEL 21
Secondary PCI
IDSEL 20
Slot 0 (Lower Slot)
13
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