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Intel ® RAID ControllerSRCU42EDual-channel Ultra320 SCSIRAID controller with PCIExpress* interfaceIntel ® RAID ControllerSRCU42XDual-channel Ultra320SCSI RAID controller withPCI-X interfaceIntel ® RAID ControllerSRCU42LDual-channel Ultra320SCSI RAID controller withPCI 2.2 interfaceIntel ® RAID ControllerSRCU41LSingle-channel Ultra320SCSI RAID controller withPCI 2.2 interfaceOrder Code SRCU42E SRCU42X SRCU42L SRCU41L SRCZCRXProcessor SupportMemoryIntel ® IOP332 I/O Processor500 MHzSupports up to 512 MB ECCDDR memory 1Intel ® IOP321 I/O Processor400 MHzSupports up to 512 MB ECCDDR memoryPCI Bus PCI Express* x8 PCI-X 133-MHz(PCI 1.0 and 2.2 compliant)Ports/ChannelsTwo Ultra320 SCSI channels(one internal, one external)Two Ultra320 SCSI channels(one internal, one external)Intel ® IOP303 I/O Processor100 MHz64 MB embedded ECC DDRmemoryIntel ® IOP302 I/O Processor100 MHz64 MB embedded ECC DDRmemoryIntel ® RAID ControllerSRCZCRXSingle- or dual-channelUltra320 SCSI modular ROMBcontroller with PCI-X interfaceIntel ® IOP321 I/O Processor400 MHz128 MB embedded ECCDDR memoryPCI 2.2 64-bit/66-MHz PCI 2.2 64-bit/66-MHz PCI-X 133-MHzTwo Ultra320 SCSI channels(one internal, one external)One Ultra320 SCSI channelTwo Ultra320 SCSI channelsForm Factor Standard PCI Standard PCI-X Low-profile PCI Low-profile PCI Low-profile PCIRAID Levels 0, 1, 5, 10, and 50 0, 1, 5, 10, 50, and JBOD 0, 1, 4, 5, 10, and JBOD 0, 1, 5, 10, 50 0, 1, 5, 10, and 50Battery BackupOptional, purchased separately;order code AXXRBBU1Optional, purchased separately;order code AXXRBBU1Not availableOptional, purchased separately;order code AXXRBBU1Cluster Support Yes Yes No No NoIntel ® ServerBoard Support1. Base model ships with 128 MB of memory; also available in SRCU42EBLK model, whichships without memory. Intel ® Portable Cache Module, order code AXXRPCM1, includesbattery-backup unit and 128 MB of memory.Visit www.intel.com/support/motherboards/server/sb/cs-010727.htm for a current list of Intel ® server boards supported by these controllers.Optional, purchased separately;order code AXXRBBU1Intel ® RAID Controllers89