To operate the MB521SP-B removable frame, a 3.5″ external bay is required. So if you have an older case, you might have one free if it is not occupied by a floppy drive for optical reasons.
Since our test system is housed in a Phanteks Enthoo Pro M case, which no longer has a 3.5″ external bay, we decided to use the Flex-Fit Trio from IcyDock. This creates a 3.5″ bay in a 5.25″ external bay and space for two 2.5″ drives.
Otherwise, the installation is relatively simple. The MB521SP-B is simply plugged into the bay until it is flush at the front and then fixed with the 4 screws provided. Afterwards only a SATA signal and power cable has to be connected.
Speaking of tight, unlike pressing the eject button, the installation under Windows 10 was absolutely easy!
Because the MB521SP-B is directly connected via SATA, no driver installation is necessary. Therefore there are no system requirements to be fulfilled apart from a SATA port.
However, we recommend to define the corresponding SATA port in the BIOS/UEFI as a hot plug, because otherwise data can be lost if the drive is removed during operation.
Icy Dock flexiDOCK MB521SP-B Result and general impression …