Questions about a self powered USB Hub
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From: Dave Martindale on 9 Apr 2008 22:02 Roy <roybasan(a)gmail.com> writes: >> Simply put, Other internal devices, such as your cdrom and such are >> using USB to connect with the MOBO.- Hide quoted text - >That make some sense , but these are not accesible externally .. or is >still considered free to use as its already connected to other >devices. ,,, It's common for a chipset to provide a lot of USB ports these days. Some may be used internally, but some may simply not be connected at all, since there may not be space for the external connectors on the case. If you want to know what devices are connected to what USB ports, you can open Device Manager and select "Show devices by connection". Dave
From: M.I.5� on 10 Apr 2008 03:10 "Roy" <roybasan(a)gmail.com> wrote in message news:f39fc076-9e18-4e0c-a39b-3a93d7b543cf(a)b9g2000prh.googlegroups.com... On Apr 8, 7:56 pm, "M.I.5�" <no....(a)no.where.NO_SPAM.co.uk> wrote: > > You probably don't want to hear this, but I would suggest that the HUB you > have bought does not support High speed mode. Unfortunately, the wording > of > the USB2 spec allows less reputable suppliers to market these as USB2 > compliant (suggesting to the unwary that they are high speed). > - Show quoted text - The Hub that I bought was made by vantec http://www.vantectw.com USB Specification;Transfer rates up to 480 Mbps wt USB 2.0(12 Mbps wt USB1.1) Do you have some ideas about this manufacturer? ------------- None whatsoever, but the chances are they are using a standard hub chipset from one of main manufacturers of such things (I believe there are 4 of them). If the hub claims to support 480 Mbps operation, have you tried it on another PC. If it doesn't function at that speed there, I suggest directing further questions at the supplier.
From: Roy on 10 Apr 2008 17:59 On Apr 10, 3:10 pm, "M.I.5¾" <no....(a)no.where.NO_SPAM.co.uk> wrote: > "Roy" <royba...(a)gmail.com> wrote in message > > news:f39fc076-9e18-4e0c-a39b-3a93d7b543cf(a)b9g2000prh.googlegroups.com... > On Apr 8, 7:56 pm, "M.I.5¾" <no....(a)no.where.NO_SPAM.co.uk> wrote: > > > > > You probably don't want to hear this, but I would suggest that the HUB you > > have bought does not support High speed mode. Unfortunately, the wording > > of > > the USB2 spec allows less reputable suppliers to market these as USB2 > > compliant (suggesting to the unwary that they are high speed). > > - Show quoted text - > > The Hub that I bought was made by vantechttp://www.vantectw.com > USB Specification;Transfer rates up to 480 Mbps wt USB 2.0(12 Mbps wt > USB1.1) > Do you have some ideas about this manufacturer? > > ------------- > > None whatsoever, but the chances are they are using a standard hub chipset > from one of main manufacturers of such things (I believe there are 4 of > them). > > If the hub claims to support 480 Mbps operation, have you tried it on > another PC. If it doesn't function at that speed there, I suggest directing > further questions at the supplier. Thanks for your info, but is there a way to determine the speed of the USB hub?
From: M.I.5� on 11 Apr 2008 02:43 "Roy" <roybasan(a)gmail.com> wrote in message news:0d041d2d-b765-434b-8978-59ab26610588(a)y18g2000pre.googlegroups.com... On Apr 10, 3:10 pm, "M.I.5�" <no....(a)no.where.NO_SPAM.co.uk> wrote: > "Roy" <royba...(a)gmail.com> wrote in message > > news:f39fc076-9e18-4e0c-a39b-3a93d7b543cf(a)b9g2000prh.googlegroups.com... > On Apr 8, 7:56 pm, "M.I.5�" <no....(a)no.where.NO_SPAM.co.uk> wrote: > > > > > You probably don't want to hear this, but I would suggest that the HUB > > you > > have bought does not support High speed mode. Unfortunately, the wording > > of > > the USB2 spec allows less reputable suppliers to market these as USB2 > > compliant (suggesting to the unwary that they are high speed). > > - Show quoted text - > > The Hub that I bought was made by vantechttp://www.vantectw.com > USB Specification;Transfer rates up to 480 Mbps wt USB 2.0(12 Mbps wt > USB1.1) > Do you have some ideas about this manufacturer? > > ------------- > > None whatsoever, but the chances are they are using a standard hub chipset > from one of main manufacturers of such things (I believe there are 4 of > them). > > If the hub claims to support 480 Mbps operation, have you tried it on > another PC. If it doesn't function at that speed there, I suggest > directing > further questions at the supplier. Thanks for your info, but is there a way to determine the speed of the USB hub? ----------------- Yes. On connecting it to a USB port on a 480 Mbps capable PC, the hub should appear on the power tab of the enhanced root port under device manager/properties. The enhanced root hub is usually the bottom one in device manager and has more than 2 ports (typically 6 or 8). If it is not 480 Mbps capable it will appear on one of the normal root ports (which only ever have 2 ports on the power tab)
From: BillW50 on 12 Apr 2008 12:56 In news:0d041d2d-b765-434b-8978-59ab26610588(a)y18g2000pre.googlegroups.com, Roy typed on Thu, 10 Apr 2008 14:59:33 -0700 (PDT): > On Apr 10, 3:10 pm, "M.I.5�" <no....(a)no.where.NO_SPAM.co.uk> wrote: >> "Roy" <royba...(a)gmail.com> wrote in message >> >> news:f39fc076-9e18-4e0c-a39b-3a93d7b543cf(a)b9g2000prh.googlegroups.com... >> On Apr 8, 7:56 pm, "M.I.5�" <no....(a)no.where.NO_SPAM.co.uk> wrote: >>> You probably don't want to hear this, but I would suggest that the >>> HUB you have bought does not support High speed mode. >>> Unfortunately, the wording of >>> the USB2 spec allows less reputable suppliers to market these as >>> USB2 compliant (suggesting to the unwary that they are high speed). >>> - Show quoted text - >> >> The Hub that I bought was made by vantechttp://www.vantectw.com >> USB Specification;Transfer rates up to 480 Mbps wt USB 2.0(12 Mbps wt >> USB1.1) >> Do you have some ideas about this manufacturer? >> >> ------------- >> >> None whatsoever, but the chances are they are using a standard hub >> chipset from one of main manufacturers of such things (I believe >> there are 4 of them). >> >> If the hub claims to support 480 Mbps operation, have you tried it on >> another PC. If it doesn't function at that speed there, I suggest >> directing further questions at the supplier. > > Thanks for your info, but is there a way to determine the speed of the > USB hub? Whoa Roy! Nobody has told you this yet and this is very important! Here is how USB hubs work! And USB 2.0 hubs are really USB 2.0 hubs, but here is the catch. If you connect up any USB 1.1 device to the hub, the whole hub drops down to 1.1 speeds. Your ports on the laptop don't act this way, just hubs acts this way. Most keyboards and mice are USB 1.1 devices. Just something to think about. -- Bill
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