The Icy Dock FatCage that we're looking at today has a server feel to it. The unit uses trays which is something we don't see too often anymore on add-on drive cages. The reason why Icy Dock needed to use drive trays instead of going with a trayless system is because the MB155SP-B fits five drives in just 5.25 inches of width.
Trayless designs add guides between each drive and in this case where space is at a premium, there simply isn't room to take up additional space.
Specification, Availability and Pricing
The MB155SP-B holds five 3.5" HDDs in three optical drive bays. Each drive bay has a dedicated SATA port on the back and the system works up to SATA III speeds. A 92mm cooling fan keeps the HDDs cool and the metal case also aids in reducing HDD temperatures.
The fan can be set to either a high, low or off setting via a jumper on the back of the system. You can also replace the fan with a different model; Icy Dock has both two and three pin fan headed next to the fan speed jumper.
At the time of writing, Newegg listed the MB155SP-B in stock at $93.99. The price is a touch higher than what we expected, but the build quality is typical Icy Dock, so we feel that the premium is justified.