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From: don on 19 Jan 2010 11:29 How many USB HID devices can Windows handle at one time ? don
From: robertwessel2 on 19 Jan 2010 13:25 On Jan 19, 10:29 am, don <don> wrote: > How many USB HID devices can Windows handle at one time ? I don't think there's a specific limit for HID devices in general, there may be some for specific types of devices.
From: Noob on 25 Jan 2010 07:29 don wrote: > How many USB HID devices can Windows handle at one time ? Wouldn't you be better off asking in a Windows news group?
From: Andrew Jackson on 25 Jan 2010 08:55 > How many USB HID devices can Windows handle at one time ? I don't know how many Windows can handle but a single USB bus is limited to 127 less the number of hubs involved. If one assumes 7-port hubs (fairly common) then that would require about 18 hubs to support just over 100 devices. How well Windows would cope polling that many devices is another matter. Andrew
From: robertwessel2 on 25 Jan 2010 16:57
On Jan 25, 7:55 am, Andrew Jackson <a...(a)nospam.com> wrote: > > How many USB HID devices can Windows handle at one time ? > > I don't know how many Windows can handle but a single USB bus is limited > to 127 less the number of hubs involved. If one assumes 7-port hubs > (fairly common) then that would require about 18 hubs to support just > over 100 devices. How well Windows would cope polling that many devices > is another matter. Of course most PCs have multiple independent USB controllers/ busses... The PC I'm working on right now has a dozen, and I could probably add another couple dozen with a combination of PCI and PCIe cards. |