Description、Part number、Feature code、Maximum supported
Riser 1 (supplies slots 1)
System x3550 M5 PCIe Riser 1 (1x LP x16 CPU0) 00KA061 A5AG 1
System x3550 M5 PCIe Riser 1 (1x ML2 x16 CPU0) 00KA063 A5AH 1
Riser 2 (supplies slots 2 and 3)
System x3550 M5 PCIe Riser 2, 1 CPU (2xLP, LP x8 CPU0 + LP x8 CPU0) 00KA062 A5AC 1
System x3550 M5 PCIe Riser 2, 1-2 CPU (FHHL x16 CPU1 + LP x16 CPU0) 00YL429 A5AD 1
System x3550 M5 PCIe Riser 2, 1 CPU (FHHL x8 CPU0 +LP x8 CPU0) None* A5AE 1
System x3550 M5 PCIe Riser 2, 1-2 CPU (LP x16 CPU1 + LP x16 CPU0) 00KA066 A5AF 1
