The Disk Drive Bays
The ZM-T3 has one 5.25” external bay, where the devices are held using conventional screws. Under this bay, there is a 2.5” internal bay. There are two internal 3.5” bays in a cage at the front panel, where the units are installed vertically, with the connectors facing down. Figure 13 shows those bays.
There ia a 2.5” internal bay in the bottom of the case, ash shown in Figure 14.
Behind the motherboard tray, there is another 2.5” bay.