When connecting an external hard disk to our brand new desktop or laptop: Apple gets to sell the bike FireWire 800 connector is "Nosecuantos" faster than USB2. Reached by other manufacturers and we sell the bike with the USB 3.0 connector. Of course find a FireWire 800 hard drive or USB 3.0 is to spend more budget for a USB 2.0 drive.
Yet there is a cheaper and faster solution, in terms of price should actually be cheaper than the box where van USB2.0 external drives. It is simply E-SATA, which is neither more nor less than a SATA connector has been changed a bit so it does not deteriorate after plugging and unplugging a few times. As power level is only one SATA connector, it is cheaper because there is no need to convert the SATA hard drive using the external connector (USB2, or FireWire 800 USB3). And it's faster, regardless of bandwidth that SATA has over other technologies, because if the connector between the adapter and the SATA disk is hardly the adapter will give more velocity. The only way to get the theoretical bandwidth of a USB 3.0 hard drive is a SATA 3.0 (SATA 6 GB) and officially but eSATA is up to 3GB, manufacturers like ASUS eSATA connectors ensure your work with 6 GB. The same applies to future improvements Firewire: no one is misled, regardless of the difficulty of making hard drives take advantage of a bandwidth greater than 3GB (especially in the case of 2.5, which spin at lower RPM) , will plug SATA or SCSI, no FireWire or USB directly.
One problem with the old E-SATA connectors is that unlike USB or Firewire not include power to feed a disc of 2.5. That changed long ago, now most of the E-SATA ports are both USB 2.0 ports and include current ( eSATAp ). On computers where it is not possible and E-SATA port is the former, it is not big problem because there are cables that take power from another USB port.
As E-SATA connectors can go on the same USB 2.0 port with eSATAp solution, no problem of space and if a manufacturer like Apple is not included, simply because he does not feel like it (in the case Apple is bleeding who also have a patent related to e-sata since 2007). Anecdotally, my Dell laptop that has two years includes one but I did not realize until weeks after buying it because Dell did not say anything surprising in the specifications and spent a few days until I noticed that next to a USB connector as well as USB logo was written "e-sata. To think how cheap it would go to a vendor as a USB Apple replace a eSATAp, ie a port that can operate alternately as e-SATA or USB powered, instead of forcing users to buy cards expresscard, a solution only available for powerbook, desktop users have no choice but to give them by yourself.
As further evidence of how cheap it is to use E-SATA connectors, a link from DealExtreme, where for just over EUR 7, we have both an adapter to convert an internal SATA port E-SATA power (contrary to what the description says, there is also a USB port), and a cable to a disk Hard 2.5, which at the other end is a E-SATA cable (which requires a E-SATA port powered):
usb-esata-to-sata-converter-adapter-for-2-5-hdd-39 621 . Notice that I have not tried it ;-).
In the shop there more versatile solutions, such as wires that are E-SATA power but can also have a USB port, boxes that support both USB 2.0 and E-SATA or having a port adapters eSATAp ..
And yes, I know that both USB and Firewire support cables longer than E-SATA and Firewire allows advanced features like riding a cheap cluster because a disk can simultaneously connect to multiple computers, but most people E-SATA connector would cheaper to them.
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