IBM System x3550 M4 19Storage host bus adaptersThe following table lists storage HBAs supported by the x3550 M4 server.Table 12. Storage adaptersPart number Description Maximum quantitysupportedFibre Channel59Y1987 Brocade 4 Gb FC Single-port HBA for IBM System x 259Y1993 Brocade 4 Gb FC Dual-port HBA for IBM System x 239R6525 QLogic 4 Gb FC Single-Port PCIe HBA for IBM System x 239R6527 QLogic 4 Gb FC Dual-Port PCIe HBA for IBM System x 242C2069 Emulex 4 Gbps FC Single-Port PCI-e HBA for IBM System x 242C2071 Emulex 4 Gbps FC Dual-Port PCI-e HBA for IBM System x 242D0485 Emulex 8 Gb FC Single-port HBA for IBM System x 242D0494 Emulex 8 Gb FC Dual-port HBA for IBM System x 242D0501 QLogic 8 Gb FC Single-port HBA for IBM System x 242D0510 QLogic 8 Gb FC Dual-port HBA for IBM System x 246M6049 Brocade 8 Gb FC Single-port HBA for IBM System x 246M6050 Brocade 8 Gb FC Dual-port HBA for IBM System x 2SAS46M0907 IBM 6 Gb SAS HBA Controller 2PCIe SSD adaptersCurrently, the server does not support High IOPS SSD adapters.Power suppliesThe server supports up to two redundant power supplies, providing N+N redundancy. Standard modelscome with one or two power supplies (model dependent). The following table lists the power supplies. AnAC power supply ships standard with one 2.8 m C13 - C14 power cord.Table 13. Power suppliesPart number Description Max quantitysupportedStandard modelswhere used94Y6668 IBM System x 550W High Efficiency Platinum ACPower Supply2 A2x, B2x, C2x, C4x, D2x,F2x, G2x, H2x, J2x, 52x,62x94Y6669 IBM System x 750W High Efficiency Platinum ACPower Supply2 L2x