swDlinkEquipmentCapacity is a BITS value indicating which hardware capabilities the switch supports, with individual bits for fan capability, redundant power capability, temperature detection, stacking capability, and chassis capability. Admins read this to determine what optional features (like RPS or stacking) the specific hardware model actually supports before attempting to configure or monitor them. For example, if the stackingCapable(3) bit is not set, an admin would know this particular unit cannot participate in a stack regardless of firmware configuration.