It's definitely not useless. I have hundreds of gigabytes of files...audio, video, and large virtual machine files.
As an example, for me to back up my 125GB collection of mp3 files, it takes about 8 hours via a USB 2.0 connection. Using Lightspeed (or USB 3.0), would cut that down to maybe 1 hour or less. 8 hours compared to 1. That's huge.
It's also a big deal if you want to "stream" anything...such as HD movies or even lossless audio...being able to have a storage device that can CONSISTENTLY push high throughput speeds for long periods of times.
Technology will always get faster and faster. Period. In your example(s), take all the times and tell yourself "it will now go 8 times faster"...so those 8 minute iPod syncs will be 1 min or less. Of course your 8 second sync (if that even exists) would go to 1 second but now we're talking about, in reality, saving 7 seconds which is the time it takes for you to plug it in, sit on your chair, and wiggle the mouse to wake up the screensaver.![]()
LOL. You totally forgot about the fact that the bottleneck of today's new external drives is the hard drive itself not the interface.
You usually get around 20 to 30MB/s with USB 2.0 and around 60 to 80MB/s with USB 3.0 and eSATA.
This already the max you can get from the drive, unless you are using SSD or RAID, which is rare, especially for a notebook.
So, no, your 8-time performance increase example is not true.
I agree that technology is always moving forward, but what the other person said is quite true. This technology on a notebook now is quite useless. Most people probably will not get to use it before they retire the machine.