Includes one 3U expansion module. No slot license included but contains 50 unlicensed slots. Maximum 50 licensed slots per module. Includes embedded Ethernet and internal module interconnect. Includes Bezel to support Ransom Block Feature upgrade option (LSC3A-AMAG-ST1A). No tape drives included but supports up to three half-high tape drives. Does not include power supplies, power cables, Fibre Channel, SAS or Ethernet cables (not needed). If drives are added, one power supply (LSC33-APWR-001A) must be added. If redundant power is needed, add two power supplies (LSC33-APWR-001A). A maximum of seven expansion modules may be added to a library. Customer installable, but onsite expansion module installation (SSC33-NEXM-000x) is recommended.