MCX354A-FCBT 544 QSFP Network Card — Compatible with 649281-B21, 661685-001, 656089-001

This listing is for an MCX354A-FCBT 544 QSFP network card. It matches the OEM part numbers 649281-B21, 661685-001 and 656089-001, making it a direct replacement or spare for systems that reference any of those SKUs. The card provides the QSFP interface and is supplied as the specified network adapter model and part numbers shown above.