Mediasonic ProBox 4-Bay 3.5" Hard Drive Enclosure

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The ProBox HF2-SU3S2 weighs 1.8 kg or 4 lb and measures 21.5 x 12.6 x 16.6 cm or 8.5 x 15.9 x 6.5 inches (D x W x H), giving it a total volume of 4.5 liters. The enclosure is sturdily built with molded black plastic but the door has a thin aluminum faceplate to give it bit of shine and pizzazz.

Cooling is provided by an 80 mm fan at the back. The eSATA and USB 3.0 connectors are also found at the rear, while the power jack is off on the side.

The enclosure sits on four small plastic rings which allows it some mobility though the weight of the chassis plus the drives inside is more than enough to keep it from being moved accidentally.

Powering the device is an external 60W adapter (12V/5A).

The external cover is attached loosely with a simple open hinge system. Once that's removed, a metal grate secured with two spring-loaded barbs ensure the hard drives stay tucked in place.

Broad metal guides align the drives with their respective connectors on the controller board at the back. The PCB takes almost all the available space with only a couple of small holes for the fan to pull air through.

Plastic handles are used to slide the drives in. There isn't much feedback to tell you if the drive has made contact with the SATA connector so just push it in as far as it will go.

LEDs at the front denote hard drive activity as well as the interface currently being used, the sync mode, and fan speed setting. To prevent accidental presses, turning the enclosure off and changing the sync/interface setting requires a long press of three seconds. It's also possible to connect the ProBox to two different systems, one through eSATA, the other through USB 3.0. Only one PC will be able to access it at a time but you can switch back and forth, handy if you want to routinely back up two PCs, or transfer data between machines that aren't otherwise networked through a wired connection.

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