The IBM 57B3 is a dual-port SAS 3Gb/s host bus adapter designed for enterprise storage connectivity in compact form factors. This low-profile PCI Express x8 adapter supports both disk and tape subsystems, making it suitable for server environments with space constraints. The 57B3 delivers up to 3Gb/s per port throughput and maintains broad compatibility with IBM System x servers and other systems supporting standard PCIe x8 slots. Typical applications include SAS disk array attachment, tape library integration, and mixed storage environments requiring dual-channel redundancy without full-height card footprint requirements.
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