Design and Configuration
The TS-S402 has the unassuming appearance of a square box with perforation. It even looks as if not assembled completely. The front and back panels, made from black glossy plastic, do not match the metallic casing of the body. There should have been an outer decorative panel over that metallic body to achieve a more harmonic and consistent exterior. Even if just painted all black, the TS-S402 would look better.
Hard disks are installed into the NAS from its front panel. There is a door in its top part that is fixed on the case by means of two moving holders and a spring-loaded stopper. The fastening mechanism is not good. The door would fall off the case each time I replaced the HDDs although its fastening was not actually broken.
To install your HDD into the NAS, you must first attach the included rails to it. The rails are firmly fixed within the NAS’s case. The interface and power cables are connected to both HDDs as a single connector on a flexible cable. This connection does not look reliable as both cables are very short and you have to bend them to plug into the HDDs. The cables did not disconnect from the HDDs during my tests, though.
Like most other NASes, this model is ventilated by a fan. It is a 60mm low-profile ball-bearing fan from AVC. It creates a strong flow of air that effectively cools all the electronics inside the case. Although its speed can be adjusted, it is noisier even than the working HDDs. The perforation of the bottom and side panels contributes to the cooling, too.
Indicators necessary to monitor the device’s status can be found on its front panel.
- PWR shows if power is connected to the NAS.
- SYS reports a general status of the NAS. For example, it is blinking frequently when the TS-S402 is shutting down.
- HDD1 and HDD2. As the name suggests, these indicators report the activity of the respective internal HDDs.
- LAN is the indicator of LAN connection activity.
These indicators are small and placed rather too close to each other in the TS-S402. As a result, you sometimes have to look hard in order to see what exactly indicators are active at the moment. There is a Copy button and a USB port to the right of them. The Copy button can be pressed to quickly copy data from drives connected via USB.
There are some vent holes in the back panel, too. Besides, you will find the following there (from left to right):
- Gigabit Ethernet port
- Second USB port
- Reset button (restores the NAS’s factory settings)
- Power On/Off
- Power adapter connector