69Y4570 - IBM PCI-x Riser Card for System x3550 M3 69Y4570 - IBM PCI-x Riser Card for System x3550 M3 $198.30
32R2883 - IBM PCI-Express Riser Card for System x3550 32R2883 - IBM PCI-Express Riser Card for System x3550 $91.75
00J6145 - IBM PCI Express Riser Card for System X3550 M4 00J6145 - IBM PCI Express Riser Card for System X3550 M4 $103.50
94Y7591 - IBM PCI-Express Riser Card GEN3 X16 for System x3550 M4 94Y7591 - IBM PCI-Express Riser Card GEN3 X16 for System x3550 M4 $147.20
00Y7972 - IBM PCI Express Riser Card 2 with Bracket for System X3550 M4 00Y7972 - IBM PCI Express Riser Card 2 with Bracket for System X3550 M4 $73.01