Product Id: 30596290
Description: WD My Book Pro WDBDTB0100JSL - Hard drive array - 10 TB - 2 bays - HDD 5 TB x 2 - USB 3.0, Thunderbolt 2 (external)
Mfr Part #: WDBDTB0100JSL-NESNThe Capacity Gauge (inner LED) consists of six sections which illuminate in a clockwise direction to indicate space used on the drive. Each section represents approximately 17 percent of disk space. The power/activity and capacity gauge LEDs are two concentric rings on the front panel of the drive. The outer ring is the power/activity LED and the inner ring is the capacity gauge LED.