Pieces to the Puzzle

Objectives
Gather 6 Inventor's Disk Fragment and use them to assemble the Inventor's Disk. Use Brann's Communicator to contact Brann Bronzebeard when you have the Inventor's Disk.

If you lose Brann's Communicator, speak to Archaeologist Andorin at Frosthold to replace it.
 * The Inventor's Disk

Description
Thank the Light that someone got my message. Now that I'm safe from the iron dwarves, I need to ask your help with something. I've got a lead on Norgannon's keystone, which guards access to Ulduar's archives, but the Titans divided it into two pieces and secreted them away.

One of the pieces, the keystone's shell, is held within the Inventor's Library on the northern coast, south of Ulduar itself. The first thing you'll need to do is retrieve the fragments of an access disk from the library's guardians.

Progress
Did you complete the disk?

Completion
Wonderful! Now that we have the disk, you must use it to open the Inventor's vault!