I have a new TS430 0441-14U model. It has the hard drive cage for 4 each 3.5" hard drives.
I bought 2 each 500GB SATA drives today, 67Y2613. They came with a blue plastic "caddy" around them. When I slide them into the system they will not go all the way back to make contact with the connection posts. The blue plastic "caddy" stops at the rear of the slot and the drive doesn't even hit the connection posts.
These were the drives specified in the lit for the TS430 model.