Western Digital My Book Thunderbolt Duo User Manual - Page 8

MY BOOK THUNDERBOLT DUO USER MANUAL Power/Activity LED The power/activity LED shows the device's normal power state and activity, and provides caution/warning indications as follows: LED Appearance Power State/Activity Normal Operating Indications Brief fast-flash display of white-amber-white- Initial power-on sequence amber-white-amber-off, less than one second in duration White, on steady Ready, interface enabled, but idle White, continuous fast flashing, approximately four times per second Active Off No power, no interface connection, or sleep status Caution/Warning Indications Amber, on steady Fan failure or over-/under-temperature condition Amber, slow flashing, approximately two times per second, every other second At or above critical temperature Note: If you see an over-temperature indication, power down the device and let it cool for 60 minutes. Power it back on, and if the problem persists, contact WD Support. Thunderbolt Ports As shown in Figure 2 on page 3, the My Book Thunderbolt Duo dual-drive storage device has two dual-channel Thunderbolt ports that provide a fast, flexible interface for: • Performance-Thunderbolt technology delivers unprecedented data transfer rates thanks to its revolutionary bidirectional I/O throughput. Each Thunderbolt port provides two bidirectional channels, each with theoretically up to 10 Gb/s of bandwidth. • Simplicity-Thunderbolt technology supports daisy chaining multiple devices through a single Thunderbolt connector so you can multitask at Thunderbolt technology speed without having to use a switch or hub. This reduces the hardware clutter and increases productivity. • Flexibility-Connect additional Thunderbolt technology-enabled external hard drives, media players, HD displays, media capture and editing systems and more through a single connector. Note: Your My Book Thunderbolt Duo device must be connected to a Mac computer that supports Thunderbolt technology. For information about cables that support Thunderbolt technology, visit http://support.wdc.com. ABOUT YOUR WD STORAGE DEVICE - 4