Apple’s new Mac Pro relies completely on external ports for expansion, with six Thunderbolt ports, four USB 3.0 ports, one HDMI port, and two gigabit Ethernet ports. The folks at Macworld Lab put the Mac Pro’s expandability to the test, connecting 36 drives with a combined 100.63 TB of storage capacity, as well as a number of other devices. Even then, the combined devices together drew only 865 watts — less than a common hairdryer. follow link
Compare More Easily in Apple Mail
In Apple Mail, if you need to work back and forth between two different views of Mail's mailbox contents, you can do so quite easily. For example, you might want to look at a mailbox holding all filtered-in sales orders from the past week while also looking at a smart mailbox showing unanswered customer questions.
To avoid constantly clicking between mailbox views and losing your context each time, choose File > New Viewer window to get a second window and then arrange each window as desired.
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