How does USB affect USB and FireWire on the processor?

Question

USB

Good day. I want to buy a scanner. You need to scan a lot of documents every day. Scanner vendors claim that USB-powered scanners are not suitable for these purposes, because there will be an overheating of the processor due to an increase in the load on the processor. Like, the FireWire processor loads less. Can you please provide some specific numbers? Is this load so critical? Is there a technical justification for this?
Thank you for attention.

Answer 1

scanners with USB power connection will not work, because. there will be an overheating of the processor due to an increase in the load on the processor

Let me guess - FireWire scanners are more expensive?
Do not listen to the sellers , they are damn sellers and their task is to sell .
Devices are designed to work continuously, there are no problems due to the constant operation of USB and cannot be.
1917 - it was in this year that the October Revolution took place.
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