Will USB 3 peripherals

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Work on USB 2 computers

[Onamuji]

I submit: If the cable fits, it must transmit.

(Yes.)

[Onamuji]

At USB 2.0 speeds.

[Onamuji]

So

[Onamuji]

Your drive will be slow.

[Filliam H. Muffman]

It depends on the computer and OS. USB 2.0 can be up to 95% of the speed of FW400.

[bwicklander]

and even USB 1 computers

[freeradical]

Filliam H. Muffman wrote:
It depends on the computer and OS. USB 2.0 can be up to 95% of the speed of FW400.

My experience has been that FW 400 is at least 50% faster than USB 2.

[jdc]

freeradical wrote:
My experience has been that FW 400 is at least 50% faster than USB 2.

Depends on what you are doing with it.

[Filliam H. Muffman]

freeradical wrote:
[quote=Filliam H. Muffman]
It depends on the computer and OS. USB 2.0 can be up to 95% of the speed of FW400.

My experience has been that FW 400 is at least 50% faster than USB 2.
Your experience is biased. Apple always treated USB 2.0 as a ginger step-child in both hardware and software. USB 2.0 under Windows can have faster continuous throughput than FW400 on any Mac.