IBM Ultraslimbay vs. Ultrabay 2000?

[kimchee411]

I didn't feel it was appropriate to post this question in any of the other forums, so I'll post it here. Anyone know if the devices for the Thinkpads' Ultrabay 2000 (current models - X, T, A, R) work in the Ultraslimbay (for 570, 600 series)? The drives look the same in the pics... and it's easier to find UB 2000 devices.