Access Control Manager Enterprise. Web-Based PACS Appliance for 2,048 Readers, includes: Physical appliance. Embedded Linux OS & Open LDAP licenses for configuration database. Access Control Manager Security Management Software License. One hundred Twenty-Eight (128), AC-SW-LIC-16RCU-6-P, 16 Reader Count Software License. Supports up to 500K identities and 150M stored events and fifty (50) simultaneous operators (via browser). Three (3) year appliance HW warranty begins at date of shipment.