Malfunction of USB-ports
in [Asus]
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From: Rob on 28 Nov 2008 12:38 "Paul" <nospam(a)needed.com> wrote in message news:ggp2l5$tfa$1(a)aioe.org... > Klaus Haber wrote: >> Hello, >> >> I use the ASUS-Board P5GD2 Deluxe. This board has totaly 8 USB 2.0-ports, >> 4 >> at the real panel direct connected and 4 ports at the front, connected by >> cable to the board. >> >> I found out, that 2 ports at the front will not work properly, if I >> connect >> them to my Epson Scanner. If I do so, I get a failure message, that an >> other scanner is already connected to the computer, which is not true. >> All >> other 6 USB-ports are working well with the scanner. I changed the >> USB-cable, no success. If I connect a camera, an USB-stick, an external >> USB-harddisk to these both ports, they all work well, exception is the >> scanner. I have no idea, what could be reason of this effect. Have the >> different USB-ports also differnt valances? If I connect the scanner to >> the different ports of my laptop, also no >> problems. So I assume, that the failure should be at the ASUS-board. Is >> there one possibility to test generally an USB-port for its >> functionallity? >> >> Thank you for comments, regards >> >> Klaus Haber >> > > You have one of these in the motherboard box. > > http://estore.asus.com/images/14-000012222.JPG > > Disconnect the front panel USB wiring. Connect up the > 2x5 USB cable of the 14-000012222 adapter. (You don't > need to connect the game port.) > > Plug the scanner into the faceplate of the adapter. > Test the scanner. If it works with the Asus adapter, > but not with the computer wiring, then the computer > wiring is faulty. Thanks, Paul - I was struggling to explain, but a picture says a thousand words! Best Regards, -- Rob
From: Klaus Haber on 28 Nov 2008 15:03 Hello Rob and Paul, Am Fri, 28 Nov 2008 17:38:00 -0000 schrieb Rob: > "Paul" <nospam(a)needed.com> wrote in message news:ggp2l5$tfa$1(a)aioe.org... >> Klaus Haber wrote: >>> Hello, >>> >>> I use the ASUS-Board P5GD2 Deluxe. This board has totaly 8 USB 2.0-ports, >>> 4 >>> at the real panel direct connected and 4 ports at the front, connected by >>> cable to the board. [...] >> >> You have one of these in the motherboard box. >> >> http://estore.asus.com/images/14-000012222.JPG >> >> Disconnect the front panel USB wiring. Connect up the >> 2x5 USB cable of the 14-000012222 adapter. (You don't >> need to connect the game port.) >> >> Plug the scanner into the faceplate of the adapter. >> Test the scanner. If it works with the Asus adapter, >> but not with the computer wiring, then the computer >> wiring is faulty. > > Thanks, Paul - I was struggling to explain, but a picture says a > thousand words! > I took an overview about your links, they meet just the problem (so I hope) I have. I will check all electrical connections and will follow your recommendations. Unfortunally I got a visit at this time over the weekend. So my proofings and results are available at the begin of the next week. I will post them in this thread and hope, you will read them and we can continue our discussion. At this time the first thanks for your help. Have a nice weekend, regards Klaus -- Homepage: http://www.bingo-ev.de/~Klaus.Haber "pH-Messung - einfach zu verstehen" neu: "Eine Hundegeschichte" http://www.bingo-ev.de/~Klaus.Haber/akita.html
From: daytripper on 28 Nov 2008 17:21 On Fri, 28 Nov 2008 21:03:22 +0100, Klaus Haber <Klaus.Haber(a)bingo-ev.de> wrote: >Hello Rob and Paul, > >Am Fri, 28 Nov 2008 17:38:00 -0000 schrieb Rob: > >> "Paul" <nospam(a)needed.com> wrote in message news:ggp2l5$tfa$1(a)aioe.org... >>> Klaus Haber wrote: >>>> Hello, >>>> >>>> I use the ASUS-Board P5GD2 Deluxe. This board has totaly 8 USB 2.0-ports, >>>> 4 >>>> at the real panel direct connected and 4 ports at the front, connected by >>>> cable to the board. > >[...] >>> >>> You have one of these in the motherboard box. >>> >>> http://estore.asus.com/images/14-000012222.JPG >>> >>> Disconnect the front panel USB wiring. Connect up the >>> 2x5 USB cable of the 14-000012222 adapter. (You don't >>> need to connect the game port.) >>> >>> Plug the scanner into the faceplate of the adapter. >>> Test the scanner. If it works with the Asus adapter, >>> but not with the computer wiring, then the computer >>> wiring is faulty. >> >> Thanks, Paul - I was struggling to explain, but a picture says a >> thousand words! >> >I took an overview about your links, they meet just the problem (so I hope) >I have. I will check all electrical connections and will follow your >recommendations. Unfortunally I got a visit at this time over the weekend. >So my proofings and results are available at the begin of the next week. I >will post them in this thread and hope, you will read them and we can >continue our discussion. >At this time the first thanks for your help. > >Have a nice weekend, > >regards > >Klaus It's certainly worth a try and can't hurt, but given that everything else you plug into the "malfunctioning" ports works fine, I suspect the scanner support software...
From: GMAN on 29 Nov 2008 03:03 In article <3znborotuwrv$.1lev6ijvh7huh.dlg(a)40tude.net>, Klaus Haber <Klaus.Haber(a)bingo-ev.de> wrote: >Hello Rob and Paul, > >Am Fri, 28 Nov 2008 17:38:00 -0000 schrieb Rob: > >> "Paul" <nospam(a)needed.com> wrote in message news:ggp2l5$tfa$1(a)aioe.org... >>> Klaus Haber wrote: >>>> Hello, >>>> >>>> I use the ASUS-Board P5GD2 Deluxe. This board has totaly 8 USB 2.0-ports, >>>> 4 >>>> at the real panel direct connected and 4 ports at the front, connected by >>>> cable to the board. > >[...] >>> >>> You have one of these in the motherboard box. >>> >>> http://estore.asus.com/images/14-000012222.JPG >>> >>> Disconnect the front panel USB wiring. Connect up the >>> 2x5 USB cable of the 14-000012222 adapter. (You don't >>> need to connect the game port.) >>> >>> Plug the scanner into the faceplate of the adapter. >>> Test the scanner. If it works with the Asus adapter, >>> but not with the computer wiring, then the computer >>> wiring is faulty. >> >> Thanks, Paul - I was struggling to explain, but a picture says a >> thousand words! >> >I took an overview about your links, they meet just the problem (so I hope) >I have. I will check all electrical connections and will follow your >recommendations. Unfortunally I got a visit at this time over the weekend. >So my proofings and results are available at the begin of the next week. I >will post them in this thread and hope, you will read them and we can >continue our discussion. >At this time the first thanks for your help. > >Have a nice weekend, > >regards > >Klaus > My wife got a visit too, he says he wont be leaving for another week or so!
From: Klaus Haber on 29 Nov 2008 07:28
Hello Paul, I found some time to continue the discussion. Am Fri, 28 Nov 2008 10:27:32 -0500 schrieb Paul: > Klaus Haber wrote: >> Hello, >> >> I use the ASUS-Board P5GD2 Deluxe. This board has totaly 8 USB 2.0-ports, 4 >> at the real panel direct connected and 4 ports at the front, connected by >> cable to the board. >> >> I found out, that 2 ports at the front will not work properly, if I connect >> them to my Epson Scanner. If I do so, I get a failure message, that an >> other scanner is already connected to the computer, which is not true. All >> other 6 USB-ports are working well with the scanner. I changed the >> USB-cable, no success. If I connect a camera, an USB-stick, an external >> USB-harddisk to these both ports, they all work well, exception is the >> scanner. I have no idea, what could be reason of this effect. Have the >> different USB-ports also differnt valances? >> If I connect the scanner to the different ports of my laptop, also no >> problems. So I assume, that the failure should be at the ASUS-board. >> >> Is there one possibility to test generally an USB-port for its >> functionallity? >> >> Thank you for comments, regards >> >> Klaus Haber >> > > You have one of these in the motherboard box. > > http://estore.asus.com/images/14-000012222.JPG Correct, I have this adapter (missing the game plug). > > Disconnect the front panel USB wiring. Connect up the > 2x5 USB cable of the 14-000012222 adapter. (You don't > need to connect the game port.) > > Plug the scanner into the faceplate of the adapter. > Test the scanner. If it works with the Asus adapter, > but not with the computer wiring, then the computer > wiring is faulty. > Maybe I didn't report exactly enough. This adapter was installed due to the handbook of the motherboard since I got the computer. I used this adapter all the time with success for all commen hardware. Only the scanner was connected from the beginning to the rear USB-port. The reason was the local arrangement of the scanner at the table. Some month ago I rearranged the local hardware and the scanner moved to a place, from which it was easier to plug the USB-cable into the adapter at the frontside than to the real. And since this rearrangement I got the malfunction of the scanner. Therefor I don't believe, that the malfunction is due to a failure in wiring or thomething else. If I connect the scanner back to the realport, it is running well again. If I connect other consumers (cameras, sticks, harddisks a.s.o.) to the same frontadapter, they are also running well. That would demonstrate, that the wiring is ok. An other point. As far as I know, there are two classes of USB-ports. I don't mean the 1.x resp. 2.0 clas but the class of powersupply. One class has a powercapacity of ~ 200 mA ( I don't know the exact value) and the other class of ~ 500 mA (not the exact value). The first class is used by hardware with low powerconsumption, the second one for high powerconsumption. USB-hardware with high power will not run proper, if they are connected to the lowpower USB-port. I took a look at ASUS Homepage, but I did not found any information about the class of my ports at the motherboard. My scanner has an own powersupply, so it should not be necessary to use a lowpower-port. At the other hand, the scanner will run at all 3 USB-ports at the laptop. Grrrrrrrrrrrrrrrr, I don't understand this ;-) @Rob I studied your link exactly and I found nothing which did not meet my wiring. From this point of view, every thing is wired right. Can you (both) give some comments to the powersupply-classes of the USB-ports in connection with the plugged consumers? Regards Klaus -- Homepage: http://www.bingo-ev.de/~Klaus.Haber "pH-Messung - einfach zu verstehen" neu: "Eine Hundegeschichte" http://www.bingo-ev.de/~Klaus.Haber/akita.html |