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What does a "Legacy USB Mouse" option in a BIOS mean?
Yes legacy usually means older revision, or obsolete. So legacy usb mouse means support for "old style usb mouses".
That's not really answering the question. As Mr. Tamm, my high school electricity teacher, liked to say, "Yes, and oranges taste orangey."
What does legacy USB mouse support mean?
- What is a legacy USB mouse?
- There's an "old style" USB mouse?
- What changed between what version of usb and what version of usb that made mice incompatible?
- Why was the change made?
- When was the change made?
- Who made the change?
- What was the virtue of the "new USB mouses" over the "old USB mouses"?
Put it another way:
What is the BIOS doing when "Legacy USB Mouse" option is enabled?
What is the BIOS doing when "Legacy USB Mouse" option is disabled?
1How does the BIOS figure out the OS needs USB mouse/kbd as PS/2 emulation? Or does it remap USB mouse/kbd to PS/2 signalling purely based on the BIOS setting "legacy USB", regardless of whether the OS understands USB input devices? – Lumi – 2015-10-12T21:59:17.283
i'm going to give it to you since you were first, and you explicitly mentioned the idea that legacy mode is where the BIOS will make the USB mouse look like a PS/2 mouse, so that operating systems that only support PS/2 mice (e.g. MS-DOS) will see a PS/2 mouse attached. Once you mentioned that emulation concept, everything clicked for me. – Ian Boyd – 2011-06-28T13:28:49.800
ooh. nice edit. I didn't know about this till you asked either - looked it up cause i just HAD to know ;) – Journeyman Geek – 2011-06-28T13:29:47.070
i like to edit people's answers with referenced quotes and pretty screenshots; helps them get more free upvotes :P (although i'm more of a stackoverflow guy) – Ian Boyd – 2011-06-30T01:38:43.970