THE MY CLOUD EX2100 EXTERIOR
WD has used a similar design to the EX4 with the difference of two bays instead of four. In terms of size the steel & plastic enclosure of the EX2100 measures 216mm in length, 109mm in width and 147mm in height.
As you can all see the EX2100 is not that much different compared to the TS-251+-8G by QNAP (the EX2100 is slightly smaller).
A small section of the right side of the enclosure is perforated much like most NAS models in the market.
At the front of the device we find the two trayless 3.5" hot-swap HDD bays along with the power on/off button and a USB 3.0 port with the one touch backup button right over it (you can configure a backup task to start when this button is pressed).
Both drives jump out from the enclosure once you pull the bay covers (easier and much faster than using trays but it does restrict the user since the EX2100 supports only 3.5" drives - although you can always use 2.5" to 3.5" adapters).
WD has used a 70mm exhaust fan with the EX2100 and right next to it we find a Kensington lock, reset button, USB 3.0 port, two RJ-45 Gigabit Ethernet ports (support link aggregation) and the DC in.