Legacy USB can cause issues with some peripherals. Years ago I had
a Maxtor One-Touch USB drive. If I enabled Legacy USB in BIOS &
the Maxtor was powered on, it would hang on Boot as it tried to do a
mount on the pre-GUI XP phase of booting. Doubtful today that you'll
encounter those type of issues but they can happen.
"Bill in Co." <not_really_here@earthlink.net> wrote in message
news:%23B%23dqABdIHA.4684@TK2MSFTNGP06.phx.gbl...
> I'm not sure I understand what you said.
>
> It sure sounds like leaving Legacy enabled would cover ALL bases, and if
> that's the case, I wonder why there's even an option to disable the
> Legacy? Hmmm, but that sounds too simplistic.
>
> So I guess one might "assume" that it's normally preferable not to select
> it (Legacy), unless you know you are going to need it - for reasons that
> are still unclear.
>
> Lil' Dave wrote:
>> Sometimes the legacy thing is a problem for the keyboard on some older
>> motherboards. I leave the bios set to stop on any fault (default).
>> These
>> motherboards I'm talking about can't find a USB keyboard with legacy
>> disabled. And, you can't get to the bios to change it as the bios can't
>> find a keyboard. All the ones I've found like this also had a PS/2 port
>> for
>> a keyboard. So, in this case, you might as well stick with a PS/2
>> keyboard.
>>
>> XP seems to know what to do with legacy and USB, and uses the USB
>> communication version hardware. Motherboard mounted that is.
>>
>> --
>> Dave
>> "Bill in Co." <not_really_here@earthlink.net> wrote in message
>> news:eOWPQK0cIHA.5712@TK2MSFTNGP04.phx.gbl...
>>> So it would be best to leave that option on, in case you ever wanted it,
>>> for such cases? Is there any drawback to leaving that legacy enabled?
>>>
>>> Lil' Dave wrote:
>>>> In a nutshell, legacy is a reroute of USB keyboard and/or mouse to
>>>> allow
>>>> an
>>>> OS to use same. XP does not need legacy support of a USB keyboard or
>>>> mouse.
>>>>
>>>> An example of where legacy support is required of a USB keyboard is
>>>> real
>>>> mode msdos. And, a USB mouse would be addressed as a standard PS/2
>>>> mouse
>>>> in msdos using its mouse driver with legacy support enabled.
>>>>
>>>> --
>>>> Dave
>>>> "attilathehun1" <attilathehun1@discussions.microsoft.com> wrote in
>>>> message
>>>> news:FBC0D496-5DA7-4915-B331-AD0A9942093C@microsoft.com...
>>>>> I'm having some problems with my PC. I went into BIOS and one of the
>>>>> options
>>>>> is to enable, disable USB Legacy. What is the purpose of USB Legacy?
>>>>> Also
>>>>> what will the result be if I leave it disabled?
>>>>> Any help would be greatly appreciated!
>>>>> Thanks, attilathehun1
>>>>> --
>>>>> attilathehun1
>
>
