ineo I-NA309J, 3.5-Inch SATA 2 Bay JBOD to B Type USB 2.0 Galaxy Neon Light (Grey) JBOD Function One Touch Backup Support Aluminum Alloy Casing Powerful and Quiet 4x4cm fan provides excellent coolingd Red LED light indicates hard disk drive access activity. Blue LED light indicates Power and Red LED light indicates hard disk drive access activity.