Optional at initial order or as field upgrade. Order up to four (or up to two for multi-protocol systems) full height adapters (mix with 10GbE Optical, 10GbE Twinax, 10GBASE-T, 25GbE, 100GbE or FC) per system. Provides four 10GbE/25GbE ports (any mix of 25GbE/10GbE ports). Also provides four 25GbE/10GbE direct access cables, 16ft (4.9m), copper. Requires DXi software version 4.7 or later. Customer installable. Will be installed at no additional charge during system or physical capacity installation. Optional onsite (SDY48-NSYS-000x) or phone-based (SDY48-NSYS-PB00) installation available when only an adapter is being installed.