cisco nexus 7700 6-slot switch: Switch Cisco C9404R Catalyst 9400 Series 4 slot chassis. Advanced Grids/Colossus - Advanced Grids: Omega Fire - gbf.wiki. N9K-C9508 | Cisco Nexus 9000 Series Switch Chassis 8 Line Card Slots.
To enable grid redundancy, you must connect the power supplies to the correct power grid
slots. For example, on the Cisco Nexus 9508 switch,
slots 1, 2, 3, and 4 are in grid A,
and slots 5, 6, 7, and 8 are in grid B.