i intend to use the Startech HSB220SAT25B trayless removable drive bay. i will generally use only one 2.5" drive, which i will put into the top slot, which is open to the air, unlike the bottom slot, which is mostly enclosed:
my first impulse is to put this into my favorite case, the Antec NSK-3480:
it would go into the upper 5.25" drive bay, with a short optical drive in the lower 5.25" drive bay.
the removable drive bay, which is a 3.5" device, would be put into a "floppy mounting bracket," to mount it in the 5.25" drive bay.
unfortunately, if i mount it as described above, it may not get enough air flow to keep the 2.5" drive cool. i would probably drill holes in the mounting bracket and block some of the holes in the top of the NSK-3480, to force some air flow over the 2.5 drive (there's negative pressure in the upper section of the case, because of the outward-pointing power supply fan). given my shop skills, the holes in the bracket would probably end up being somewhat unsightly and would be a direct path for noise to escape from the case, but it's the best idea i've come up with, so far.
i could just put the removable drive bay in the NSK-3480's 3.5" drive bay, but that looks like an even deader air space.
alternatively, i have an old Lian-Li PC-V1100B case that i could re-purpose for this task. it would muffle any noise from 2.5" drive behind a door, and its cavernous size would easily allow me to add a slow 120mm fan aimed at the 2.5" drive to keep it cool. it's a much simpler solution, but i'm resisting having that monster back in my office, when i could have the tiny, cute NSK-3480.
i'd welcome any suggestions anyone may have...