Lian Li EX-20N. Maximum capacity: 4 TB, RAID levels: 0, 1, JBOD, Hard drive interface: Serial ATA, Serial ATA II. Memory type: DDR, Internal memory: 128 MB, Flash memory: 16 MB. Processor clock speed: 300 MHz. Cabling technology: Gigabit Ethernet. Compatible operating systems: Windows Vista, XP Professional/Home Edtion, 2000 Mac OS X