HP StorageWorks All-in-One Storage Systems AiO 400 1TB Ultrium 448. Internal memory: 1024 MB, Maximum internal memory: 4 GB. Processor model: Dual-core Intel Pentium D (3.0 GHz/800) Cache Memory 2 x 2 MB L2, Processor clock speed: 3000 MHz. Networking features: Embedded Dual Port Broadcom 5751 and 5721 10/100/1000. Operating system provided: Windows Storage Server 2003 R2 (Standard Edition). Internal mass storage: 4 x 250 GB front load, hot plug, 7200 RPM SATA HDDs