Dynamic Application Environment is customer installable. Order one per DXi system if customer prefers onsite assistance with license activation and configuration of Dynamic Application Environment for DXi v3.4 and higher. If onsite installation is selected or required, the single Entry-Level/Midrange Site Charge (SAABB-NSSC-000x) or Enterprise Site Charge (SAABB-NSSE-000x) will apply to ALL Entry-Level/Midrange products or ALL Enterprise. The single Site Charge will apply to all products (for which installation has been purchased) being installed during the same onsite visit. If multiple onsite visits are required, order additional Site Charge per visit. Entry-Level/Midrange Site Charge is not applicable when one or more enterprise systems are being installed at the same location along with entry-level/midrange systems during the same site visit. For example, when installation is ordered for installation at the same site and same visit for two Scalar i3 (entry-level), one Scalar i500 (midrange), and one DXi9100 (enterprise), order one Enterprise Site Charge (SAABB-NSSE-000x) for the four systems.