A vertex is a SSD (Solid State Disk). They are mass storage devices (hard disk drive substitutes) using NAND flash memory. SSD's come in a 2.5" (laptop) form factor. So I have a converter that allows me to mount the 2.5" SSD in a 3.5" Floppy bay. The reason it takes a floppy is it is hot swapable so I can add and remove drives without opening the whole computer.
Theres a 8th slot in the back of the 922, put it there. Also the 922 does have a floppy bay, I think all CM cases do. But issue here is, a 360 rad will take up 2 5.25" bays, you have 2 bay res, that leaves only 1 bay left, if you use it for a SSD you won't have room for any other drives.
Here's a pic of the back and front, I would really say stick it in the 8th slot on the back, you might have to make some sort of cradle that bolts in and holds the drive there, then put a finger off the top of the drive so you can pull it out the back.
That or you could do the samething for any of the drive slots, as I would assume your not using them all, just make a sort of tray and make it so you can pull the SSD out the back.