Monday's announcement that the new 9 and MacBook Pros come equipped with USB 3.0 ports was welcome news to Mac users, but an indication of a broader question in the minds of those same users -- which input/output port technology is the best? CNET's Steven Shankland took a look at four I/O technologies -- Thunderbolt, HDMI, USB 3.0 and the new PCIe Cable -- to compare the pros and cons of each.
Thunderbolt is Intel's design for a high-speed port technology, with Apple and Acer both adding Thunderbolt ports to most new personal computers. It hasn't been widely adopted, however, and peripherals that ta
