from
www.komando.com (good site for good info)
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Q. I'm thinking about a new computer. When I bought my
last one three years ago, USB was the big thing. Now
there's USB 2.0 and Firewire. What do I need?
A. You're running up against the march of technology. The
first version of USB (universal serial bus) was hot three
years ago. But it is being supplanted by much faster
technologies.
Peripherals such as printers or cameras hook up to the
USB connections on the computer. Most computers have USB
connections both in the back and front.
The first generation USB is 1.1. It moves data at 12
megabits per second. That was speedy in its day. But
Apple overwhelmed it with Firewire. (Firewire's technical
name is IEEE 1394 Serial Bus. Is it any wonder Apple
renamed it?) Firewire transfers data at 400 megabits per
second. It is made for both Apple machines and PCs.
Then, along came USB 2.0. That's actually faster than
Firewire, running at 480 megabits per second. Most new
PCs now have a mix of USB 1.1 and 2.0 connections. Some
things, like mice and keyboards, have no use for 2.0's
high speed, so 1.1 is sufficient. But if you're
downloading video from a camcorder, you'll need all the
speed you can get. Those are big, big files! USB 2.0
ports can handle 1.1 devices, but they run at 1.1 speed.
Of course, the Firewire folks aren't resting. They're
working on a version that will move up to 3.2 gigabits of
data per second, eventually. Presumably, we'll get a
faster USB someday, too.
So, what should you buy? This situation is typical of
computers. No matter how long you wait, you never stay
ahead of the technology curve. And you don't really need
to.
If you're buying a PC, try to get some USB 2.0 ports.
Also, try to get at least one Firewire port. That will
give you maximum flexibility. Apple computers come with
Firewire and the much slower USB 1.1 ports.