Here we get our first look at the QNAP TS-421. The TS-420 looks identical other than the LCD screen behind the tinted window and the control buttons to the right of the screen. There are four easy to access drive sleds just under the screen. On the lower left side is the power and USB copy button that surrounds the USB 2.0 port.
The copy function is quite impressive for a consumer market device. To use the feature, you just plug your thumb drive or external storage into the port and hit the copy button. The data copy goes to a specific folder on the NAS and then you can access it from your other devices.
This side of the NAS has a vent to keep the processor and RAM cool. The TS-421 has a small footprint, so it will fit easily on a shelf or on top of a file cabinet.
The TS-421 has a quiet fan that keeps the NAS and the HDDs inside cool. Along the right side of the 421 is where we found the I/O ports. Two eSATA ports at the top, then two gigabit Ethernet ports, two USB 3.0 ports, a single USB 2.0 port and finally the connector for power.
The display shows more than just a welcome message. You can use the display and configuration buttons to set your NAS IP and several other settings.