Questions about a self powered USB Hub
in [Laptops]
|
From: Roy on 13 Apr 2008 07:00 On Apr 13, 12:56 am, "BillW50" <Bill...(a)aol.kom> wrote: > Innews: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.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? > > 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- Hide quoted text - > > - Show quoted text - Thanks for the Information Bill! I never thought about that!. I am not sure of if the wireless mouse is a USB1.1 or 2.0, what do you reckon? But I am attaching the dongle for such mouse directly to the one of the three USB outlets. Why do I need another USB outlet is for the printer, scanner, external DVDRAM player, External 500GB hard drive and flash drives which I connect whenever I need it. I don't use external keyboard for this particular laptop. But I am still unsure about what M 1.5 input, as I counted the number of ports in the device manager and indeed it more than 2; it seven actually. M1.5 states: "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 Roy
From: BillW50 on 13 Apr 2008 12:43 In news:9ac74ebb-cb1f-483d-8965-583f37368f15(a)a5g2000prg.googlegroups.com, Roy typed on Sun, 13 Apr 2008 04:00:23 -0700 (PDT): > Thanks for the Information Bill! I never thought about that!. > I am not sure of if the wireless mouse is a USB1.1 or 2.0, what do > you reckon? It is very possible. As the reason is that it doesn't help a mouse running 2.0 vs. 1.1 speeds. So they usually don't bother making them run at 2.0 speeds. > But I am attaching the dongle for such mouse directly to the one of > the three USB outlets. > Why do I need another USB outlet is for the printer, scanner, > external DVDRAM player, External 500GB hard drive and flash drives > which I connect whenever I need it. > I don't use external keyboard for this particular laptop. Yes disconnect anything you like. And you can check the speed when you connect up your flash drive and warns you it isn't running at 2.0 speeds anymore. > But I am still unsure about what M 1.5 input, as I counted the number > of ports in the device manager and indeed it more than 2; it seven > actually. > M1.5 states: > "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 > > Roy Well I don't doubt that, but I don't think that is important. I think you have one or more 1.1 devices on the hub. Thus the whole hub drops everything down to 1.1 speeds. -- Bill
From: M.I.5� on 14 Apr 2008 02:54 "BillW50" <BillW50(a)aol.kom> wrote in message news:4800ebae$0$6431$834e42db(a)reader.greatnowhere.com... > 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. > What utter rubbish. If it did, it would be a complete violation of the USB 2 specification. In fact what is required is that a fully USB2 compliant hub is required to upconvert any low or fast speed peripheral communication to the fast speed for onward transmission. I am not aware of any USB2 hub chipset that behaves the way you say.
From: M.I.5� on 14 Apr 2008 02:55 "Roy" <roybasan(a)gmail.com> wrote in message news:9ac74ebb-cb1f-483d-8965-583f37368f15(a)a5g2000prg.googlegroups.com... On Apr 13, 12:56 am, "BillW50" <Bill...(a)aol.kom> wrote: > Innews: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- Hide quoted text - > > - Show quoted text - Thanks for the Information Bill! I never thought about that!. I am not sure of if the wireless mouse is a USB1.1 or 2.0, what do you reckon? ------ The reason is that it's utter rubbish. A mouse is generally a slow speed device but can be connected to a USB2 hub without compromising the speed of anything else connected.
From: M.I.5� on 14 Apr 2008 02:56 "BillW50" <BillW50(a)aol.kom> wrote in message news:48023857$0$6429$834e42db(a)reader.greatnowhere.com... > In > news:9ac74ebb-cb1f-483d-8965-583f37368f15(a)a5g2000prg.googlegroups.com, > Roy typed on Sun, 13 Apr 2008 04:00:23 -0700 (PDT): >> Thanks for the Information Bill! I never thought about that!. >> I am not sure of if the wireless mouse is a USB1.1 or 2.0, what do >> you reckon? > > It is very possible. As the reason is that it doesn't help a mouse > running 2.0 vs. 1.1 speeds. So they usually don't bother making them run > at 2.0 speeds. > >> But I am attaching the dongle for such mouse directly to the one of >> the three USB outlets. >> Why do I need another USB outlet is for the printer, scanner, >> external DVDRAM player, External 500GB hard drive and flash drives >> which I connect whenever I need it. >> I don't use external keyboard for this particular laptop. > > Yes disconnect anything you like. And you can check the speed when you > connect up your flash drive and warns you it isn't running at 2.0 speeds > anymore. > >> But I am still unsure about what M 1.5 input, as I counted the number >> of ports in the device manager and indeed it more than 2; it seven >> actually. >> M1.5 states: >> "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 >> >> Roy > > Well I don't doubt that, but I don't think that is important. I think > you have one or more 1.1 devices on the hub. Thus the whole hub drops > everything down to 1.1 speeds. > Utter Bollocks.
First
|
Prev
|
Next
|
Last
Pages: 1 2 3 4 Prev: Aftermarket Compaq Presario DVD burner Next: Acer 5100 Bios password reset? |