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We connected two Pegasus R6 units together in our testing and they indeed suffered no drop-off in performance. With the other port, you can daisy-chain up to five other Thunderbolt devices, or a Mini DisplayPort monitor, without reducing the connection bandwidth, per the Thunderbolt standard. You can use one of these ports to connect the drive to the host computer using a Thunderbolt cable, which unfortunately is not included and costs another $49. On the back, the R6 has a standard power connection port similar to that of a desktop computer, a big ventilation fan for the hard drives, another smaller vent for the built-in power supply, and two Thunderbolt ports. Nonetheless, like all devices made to work with Macs, the device manages to remain visually appealing, with an all-aluminum chassis. The Pegasus is about the size you'd expect a storage device that hosts six 3.5-inch internal hard drives to be: it's very large.
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