If Icy Dock MB994SP-4S is offering more than what you require then Icy Dock MB991IK-B is another alternative solution for you. In short Icy Dock MB991IK-B could be considered as a simplified version of Icy Dock MB994SP-4S which is only able to support a single 2.5" drive bay in 3.5" form factor instead of quad drive bays supportability in 5.25" form factor.



Link: HardwareBistro