Hypertec HYMCI8504G [Legacy] memoria 4 GB DDR3 1333 MHz Data Integrity Check [verifica integrità dati] (A Hypertec Legacy Cisco equivalent 4GB Registered Dual Rank DIMM [PC3-10600R] Note - Hypertec CISCO equivalent memory is functionally equivalent to the CISCO product- but may demonstrate a warning message with respect to unestablishable identity- or invalid FRU. This does not affect operation. [Lifetime warranty])