Ip network video recorder 8 channels for video recording 4 compartments for the hdd local monitoring rackmount dual power supplies intel 2 6 ghz specification processor dual core intel ram 4gb ddr3 flash memory 512 mb disk space 4 x 25 or 35 hdd interface sata i sata ii and sata iii slots for hdd 4 x lockable slot hot swappable storage capacity 16 tb network interfaces 2 x rj 45 gigabit ethernet status indicators status lan usb 4 x hdd usb 2 x usb 30 rear 3 x usb 20