This is the specific equipment ID value that this particular policy rule row requires an ONU to report before it's auto-accepted. It's how the admin scopes one row of the multi-rule policy table to exactly one hardware model rather than an entire vendor's product line. For example, entering the equipment ID for one specific ONU model here means only units reporting that exact model designator match this rule, while other models from the same vendor fall through to a different rule or get rejected.