I/O Adapters; Sp Expansion I/O Unit (F/C 2055) - IBM RS/6000 SP Handbook

Important:
For SP Switch systems, these nodes require the SP Switch MX2 Adapter
(F/C 4023).
For SP Switch2 systems, these nodes require the SP Switch2 Adapter
(F/C 4025).

2.7.8 I/O adapters

The POWER3 SMP High Node has five PCI (Peripheral Component
Interconnect) adapter slots. A full line of PCI adapters is offered for these nodes
including:
SCSI-2
Ethernet
Token Ring
FDDI
ATM
Async
Wide Area Network (WAN)
SSA RAID5
S/390 ESCON
Serial HIPPI
Note: A 10Base2 or 10BaseT/100BaseTX Ethernet adapter for the SP
Ethernet is integrated into the POWER3 High Node and does not occupy a
PCI slot.

2.7.9 SP Expansion I/O unit (F/C 2055)

Each SP Expansion I/O Unit is an extension of the POWER3 SMP High Node,
providing eight additional PCI adapter slots and four hard disk drive bays. PCI
adapter hot-plug capability is supported for the SP Expansion I/O Unit with AIX
4.3.3 software loaded on the node.
Up to six expansion units can be connected to each processor node in one to
three loops of one or two expansion units in each loop. Figure 2-3 on page 31
shows a rear view of POWER3 High Node and five SP Expansion I/O Units
connections
Chapter 2. SP internal processor nodes
59