Table 5. PCI slot locations and descriptions for the system
Slot
Location code
Description
PHB
Adapter size
Direct memory
access (DMA)
capable
Slot 1
P1-C2
PCIe x8 generation 2
PCIe-PHB5
Full-height
Half-length
64-bit
Slot 2
P1-C3
PCIe x8 generation 2
PCIe-PHB4
Full-height
Half-length
32-bit
Slot 3
P1-C4
PCIe x8 generation 2
PCIe-PHB3
Full-height
Half-length
32-bit
Slot 4
P1-C5
PCIe x8 generation 2
PCIe-PHB2
Full-height
Half-length
64-bit
Slot 5
P1-C6
PCIe x8 generation 2
PCIe-PHB1
Full-height
Half-length
32-bit
Slot 6
P1-C7
PCIe x4 generation 2
PCIe-PHB0
Full-height
Half-length
32-bit
Slot 7
P1-C1-C1
PCIe x8 generation 2
PCIe PHB0 module B
Low-profile
32-bit
Slot 8
P1-C1-C2
PCIe x8 generation 2
PCIe PHB1 module B
Low-profile
32-bit
Slot 9
P1-C1-C3
PCIe x8 generation 2
PCIe PHB3 module B
Low-profile
32-bit
Slot 10
P1-C1-C4
PCIe x8 generation 2
PCIe PHB4 module B
Low-profile
32-bit
v
Regular full-height adapters can be installed only in the six full-height slots: P1-C2 to P1-C7.
v
The low-profile adapters can be installed only in slot P1-C1-C1 to slot P1-C1-C4.
v
The low-profile and full-height adapters are the same adapters but with different brackets for installing in the
slots. Install the low-height cards in low-profile slots and full-height cards in full-height slots.
v
Slots 5 - 8 are optional low-profile slots and are available only if the feature 5685, is connected to the GX++ slot
(P1-C1). If 5685 is installed, then these slots (slots 7 - 10) support generation-2 PCIe adapters.
v
All slots support enhanced error handling (EEH).
v
None of the internal PCIe slots are hot swappable. Turn off the system before you insert any of the PCIe adapters.
v
Only the carriers that are used in the I/O expansion units are hot swappable.
PCIe expansion units
PCIe expansion units, feature code (FC) 5685, provides connector slots for four low-profile generation-1 or
generation-2 PCIe adapters and can be installed in slots C1-C1 to C1-C4. FC 5610 provides connector slots
for four low-profile PCIe generation-1 adapters and can be installed in slots C1-C1 to C1-C4. The PCIe
generation-2 adapters work best on FC 5685. PCIe expansion unit, FC 5877 and FC 5802 are supported on
the system running IBM AIX, IBM i, or Linux. The system can be configured to support up to two I/O
expansion units per GX adapter.
Restriction:
A GX channel adapter that has one or two of 5877 or 5802 expansion units, or one of each
5877 and 5802 expansion unit that is connected cannot have any other devices that are connected to that
adapter.
Note:
For optimum performance, you might want to limit the total number of expansion units that
contain high bandwidth and extra-high bandwidth adapters. See “Performance notes” on page 48.
The expansion units attach to a 4X channel adapter installed in the GX slots available in the system.
The maximum number of attached remote I/O drawers depends on the number of processor chip
module units in the system.
PCI adapter placement
23