IBM System x3550 M4
17
I/O expansion options
The server supports two PCI slots with different riser cards installed into two riser sockets on the system
planar (one riser socket supports the installation of one riser card). The slot form factors are as follows:
Slot 1: PCIe x16; low profile, half-length
z
Slot 2: PCIe x16, PCIe x8, or PCI-X; full-height, half-length (requires second processor to be installed)
z
Riser 1 supplies slot 1, and riser 2 supplies slot 2. Standard models have two riser cards installed that
provide one PCIe x16 Gen 3 slot and one PCIe x8 Gen 3 slot.
You can replace the second riser card with one of the following (or configure one of these riser cards
instead of the second riser card using special bid or CTO), provided a second processor is also installed:
A riser with one PCIe x16 Gen 3 slot
z
A riser with one PCIe x8 Gen 3 slot
z
A riser with one PCI-X 64 bit/133 MHz slot
z
The following table lists the PCI riser card options.
Table 10. PCI riser card options
Part number
Description
Maximum quantity
supported
69Y5670
x3550 M4 PCIe Gen-III Riser Card (1 x8 FH/HL Slot)
1
69Y5671
x3550 M4 PCIe Gen-III Riser Card (1 x16 FH/HL Slot)
1
69Y5669
x3550 M4 PCI-X Riser Card (1 PCIX FH/HL Slot)
1
