Origin Storage Thecus 5 Bay NAS PRO, 1250GB. Processor clock speed: 1.5 GHz. Total storage capacity: 1250 GB, Hard drive capacity: 250 GB, RAID levels: 0, 1, 5, 6, 10, JBOD. Internal memory: 0.5 GB, Internal memory type: DDR. Compatible operating systems: Microsoft Windows NT/2000/XP/2003 Unix/Linux/BSD MAC OS X, OS 9, OS 8.6