Dell PowerEdge SAS 5/iR PCIe SAS/SATA RAID 0, 1 Controller
Dell Part Number: UN939, 0UN939 (card)
The card is fully tested, in perfect working condition. It was pulled from a working Dell PowerEdge 840 server.
The SAS 5/iR PCI Express RAID Adapter from Dell is used to connect internal hard drives in servers, workstations and high-end PCs. SAS 5/iR utilises high performance SAS 3Gb/s technology to connect to the hard drives, and the latest generation of host interface technology, PCI Express (PCI-E). The SAS 5/iR provides integrated capability for RAID levels 0 and 1.
Dell PERC 5/iR Official Documentation