The Viper U3 shares the same basic design as the USB 2.0 and eSATA equipped versions of the enclosure. It measures 187 mm x 117 mm x 30 mm and weighs 353g without a hard drive installed. While the front and back of the Viper U3 are made of ABS plastic, the body is constructed of brushed aluminum. This not only looks great, it helps keep the drive inside cool.
Along the front of the Viper U3 you can see a pair of LED indicators. These two LED's light up blue when the unit is powered on and will flash to show disk activity. Sadly, these two LED's are not nearly as bright as what is portrayed on the packaging. On my Viper U3, they were so dim that I had a hard time determining whether or not the unit was actually powered on.
The rear of the Viper U3 is pretty straight forward. Below the USB 3.0 port, there is the main power switch and the enclosure's DC power connection.
