IBM 21H5490 2745 2-Line WAN PCI IOA Expansion Adapter is a legacy I/O expansion card designed for AS/400e server environments. This PCI-based adapter provides dual WAN line connectivity, enabling synchronous wide-area network communications at speeds typical of telecom-grade interfaces. The card supports IBM's Input/Output Adapter architecture and integrates with AS/400e systems requiring dedicated WAN interface expansion beyond base I/O capacity. Form factor: standard PCI slot insertion. Typical deployment includes branch office connectivity, remote data replication, and legacy telecommunications integration in mature iSeries/AS/400 infrastructure. Compatibility limited to AS/400e platform; not suitable for newer Power Systems or x86 architectures.
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