USB Hub killed two Macs... ???
I am sending this question here, even though it relates to a couple of iMacs, as in reality it's USB which is the subject and not iMac. I have just seemingly killed (?) two Bondi iMacs by plugging a powered USB hub in. Prior to using the hub, they both worked fine, now they won't start up at all. I can hear the click of the PSU when I plug in the power cable, but even pressing the button on the front with nothing else plugged in, nothing happens. It's a TopCom USB 2.0 (1.1 compatible) powered hub with 4 ports, so nothing out of the ordinary but I am 100% sure that it was the hub that caused the fault(s). 1. What could have happened to the iMacs ? Can they be fixed ? Any checks to be made ? 2. Is it likely to be a faulty hub, or is there some incompatibility (though there shouldn't be) ? Larry _ Don't just search. Find. Check out the new MSN Search! http://search.msn.com/ -- G-Books is sponsored by http://lowendmac.com/ and... Small Dog Electronicshttp://www.smalldog.com | Refurbished Drives | -- Check our web site for refurbished PowerBooks | CDRWs on Sale! | Support Low End Mac http://lowendmac.com/lists/support.html G-Books list info: http://lowendmac.com/lists/g-books.html -- AOL users, remove mailto:; Send list messages to: mailto:G-Books@mail.maclaunch.com To unsubscribe, email: mailto:[EMAIL PROTECTED] For digest mode, email: mailto:[EMAIL PROTECTED] Subscription questions: mailto:[EMAIL PROTECTED] Archive: http://www.mail-archive.com/g-books%40mail.maclaunch.com/ --- iPod Accessories for Less at 1-800-iPOD.COM Fast Delivery, Low Price, Good Deal www.1800ipod.com ---
Re: USB Hub killed two Macs... ???
Did you have the computer on when you plugged it in? Sometimes with powered hubs you are not supposed to plug them in when the computer is on. If it really did fry them, I would call and ask for the company to pay for the damage, because that is unacceptable. Ben On Feb 28, 2005, at 8:44 AM, Larry le Mac wrote: I am sending this question here, even though it relates to a couple of iMacs, as in reality it's USB which is the subject and not iMac. I have just seemingly killed (?) two Bondi iMacs by plugging a powered USB hub in. Prior to using the hub, they both worked fine, now they won't start up at all. I can hear the click of the PSU when I plug in the power cable, but even pressing the button on the front with nothing else plugged in, nothing happens. It's a TopCom USB 2.0 (1.1 compatible) powered hub with 4 ports, so nothing out of the ordinary but I am 100% sure that it was the hub that caused the fault(s). 1. What could have happened to the iMacs ? Can they be fixed ? Any checks to be made ? 2. Is it likely to be a faulty hub, or is there some incompatibility (though there shouldn't be) ? Larry _ Don't just search. Find. Check out the new MSN Search! http://search.msn.com/ -- G-Books is sponsored by http://lowendmac.com/ and... Small Dog Electronicshttp://www.smalldog.com | Refurbished Drives | -- Check our web site for refurbished PowerBooks | CDRWs on Sale! | Support Low End Mac http://lowendmac.com/lists/support.html G-Books list info: http://lowendmac.com/lists/g-books.html -- AOL users, remove mailto:; Send list messages to: mailto:G-Books@mail.maclaunch.com To unsubscribe, email: mailto:[EMAIL PROTECTED] For digest mode, email: mailto:[EMAIL PROTECTED] Subscription questions: mailto:[EMAIL PROTECTED] Archive: http://www.mail-archive.com/g-books%40mail.maclaunch.com/ --- iPod Accessories for Less at 1-800-iPOD.COM Fast Delivery, Low Price, Good Deal www.1800ipod.com --- -- G-Books is sponsored by http://lowendmac.com/ and... Small Dog Electronicshttp://www.smalldog.com | Refurbished Drives | -- Check our web site for refurbished PowerBooks | CDRWs on Sale! | Support Low End Mac http://lowendmac.com/lists/support.html G-Books list info: http://lowendmac.com/lists/g-books.html -- AOL users, remove mailto:; Send list messages to: mailto:G-Books@mail.maclaunch.com To unsubscribe, email: mailto:[EMAIL PROTECTED] For digest mode, email: mailto:[EMAIL PROTECTED] Subscription questions: mailto:[EMAIL PROTECTED] Archive: http://www.mail-archive.com/g-books%40mail.maclaunch.com/ --- iPod Accessories for Less at 1-800-iPOD.COM Fast Delivery, Low Price, Good Deal www.1800ipod.com ---
Re: USB Hub killed two Macs... ???
On 2/28/05 10:00 AM, Ben Parkhurst [EMAIL PROTECTED] wrote: Did you have the computer on when you plugged it in? Sometimes with powered hubs you are not supposed to plug them in when the computer is on. Where did you get this information? I've never seen a peep about this anywhere. -- G-Books is sponsored by http://lowendmac.com/ and... Small Dog Electronicshttp://www.smalldog.com | Refurbished Drives | -- Check our web site for refurbished PowerBooks | CDRWs on Sale! | Support Low End Mac http://lowendmac.com/lists/support.html G-Books list info: http://lowendmac.com/lists/g-books.html -- AOL users, remove mailto:; Send list messages to: mailto:G-Books@mail.maclaunch.com To unsubscribe, email: mailto:[EMAIL PROTECTED] For digest mode, email: mailto:[EMAIL PROTECTED] Subscription questions: mailto:[EMAIL PROTECTED] Archive: http://www.mail-archive.com/g-books%40mail.maclaunch.com/ --- iPod Accessories for Less at 1-800-iPOD.COM Fast Delivery, Low Price, Good Deal www.1800ipod.com ---
Re: USB Hub killed two Macs... ???
When I worked at a computer store and USB first came out, I was told by an Intel rep that powered hubs should be plugged in when the computer is off. I have followed this info since 1997, and recommend it to anyone who buys a powered hub. Regular USB perhipials are just fine to hot plug. Ben On Mon, 28 Feb 2005 11:30:00 -0500, [EMAIL PROTECTED] [EMAIL PROTECTED] wrote: On 2/28/05 10:00 AM, Ben Parkhurst [EMAIL PROTECTED] wrote: Did you have the computer on when you plugged it in? Sometimes with powered hubs you are not supposed to plug them in when the computer is on. Where did you get this information? I've never seen a peep about this anywhere. -- G-Books is sponsored by http://lowendmac.com/ and... Small Dog Electronicshttp://www.smalldog.com | Refurbished Drives | -- Check our web site for refurbished PowerBooks | CDRWs on Sale! | Support Low End Mac http://lowendmac.com/lists/support.html G-Books list info: http://lowendmac.com/lists/g-books.html -- AOL users, remove mailto:; Send list messages to: mailto:G-Books@mail.maclaunch.com To unsubscribe, email: mailto:[EMAIL PROTECTED] For digest mode, email: mailto:[EMAIL PROTECTED] Subscription questions: mailto:[EMAIL PROTECTED] Archive: http://www.mail-archive.com/g-books%40mail.maclaunch.com/ --- iPod Accessories for Less at 1-800-iPOD.COM Fast Delivery, Low Price, Good Deal www.1800ipod.com --- -- G-Books is sponsored by http://lowendmac.com/ and... Small Dog Electronicshttp://www.smalldog.com | Refurbished Drives | -- Check our web site for refurbished PowerBooks | CDRWs on Sale! | Support Low End Mac http://lowendmac.com/lists/support.html G-Books list info: http://lowendmac.com/lists/g-books.html -- AOL users, remove mailto:; Send list messages to: mailto:G-Books@mail.maclaunch.com To unsubscribe, email: mailto:[EMAIL PROTECTED] For digest mode, email: mailto:[EMAIL PROTECTED] Subscription questions: mailto:[EMAIL PROTECTED] Archive: http://www.mail-archive.com/g-books%40mail.maclaunch.com/ --- iPod Accessories for Less at 1-800-iPOD.COM Fast Delivery, Low Price, Good Deal www.1800ipod.com ---
Re: USB Hub killed two Macs... ???
To the best of my knowledge (and I have studied electronics at Uni for 4 years) a powered hub simply boosts the signal out to the connected devices, and can be used as an unpowered hub with the PSU unplugged. It should not affect the computer end of the hub. Obviously there might be something wrong with the hub, but still odd IMO. I had a small brainwave and I'm going to try pressing the reset button and see if this helps revive the iMacs. Question (I know this is not the iMac list) is the external reset switch (tiny resessed thing by the USB port) the same as the Cuda switch ??? Larry _ FREE pop-up blocking with the new MSN Toolbar - get it now! http://toolbar.msn.click-url.com/go/onm00200415ave/direct/01/ -- G-Books is sponsored by http://lowendmac.com/ and... Small Dog Electronicshttp://www.smalldog.com | Refurbished Drives | -- Check our web site for refurbished PowerBooks | CDRWs on Sale! | Support Low End Mac http://lowendmac.com/lists/support.html G-Books list info: http://lowendmac.com/lists/g-books.html -- AOL users, remove mailto:; Send list messages to: mailto:G-Books@mail.maclaunch.com To unsubscribe, email: mailto:[EMAIL PROTECTED] For digest mode, email: mailto:[EMAIL PROTECTED] Subscription questions: mailto:[EMAIL PROTECTED] Archive: http://www.mail-archive.com/g-books%40mail.maclaunch.com/ --- iPod Accessories for Less at 1-800-iPOD.COM Fast Delivery, Low Price, Good Deal www.1800ipod.com ---
Re: USB Hub killed two Macs... ???
On 28/02/05 12:09, Larry le Mac [EMAIL PROTECTED] wrote: To the best of my knowledge (and I have studied electronics at Uni for 4 years) a powered hub simply boosts the signal out to the connected devices, and can be used as an unpowered hub with the PSU unplugged. It should not affect the computer end of the hub. Obviously there might be something wrong with the hub, but still odd IMO. I had a small brainwave and I'm going to try pressing the reset button and see if this helps revive the iMacs. Question (I know this is not the iMac list) is the external reset switch (tiny resessed thing by the USB port) the same as the Cuda switch ??? I'm not 100% sure but usually, the reset switch is NOT the CUDA switch. On my PowerMac BW G3, the external reset switch doesn't seem to have anything to do with the CUDA switch which is on the motherboard. However, they could be the same thing. Here is what Apple says about the CUDA chip: The Cuda is a microcontroller chip on the Power Macintosh G4 (PCI Graphics) logic board. and: The function of the Cuda chip is to: ? Turn system power on and off. ? Manage system resets from various commands. ? Maintain parameter RAM (PRAM). ? Manage the real-time clock. -Laurent. -- Laurent Daudelin Developer, Multifamily, ESO, Fannie Mae mailto:[EMAIL PROTECTED]Washington, DC, USA Usual disclaimers apply *** -- G-Books is sponsored by http://lowendmac.com/ and... Small Dog Electronicshttp://www.smalldog.com | Refurbished Drives | -- Check our web site for refurbished PowerBooks | CDRWs on Sale! | Support Low End Mac http://lowendmac.com/lists/support.html G-Books list info: http://lowendmac.com/lists/g-books.html -- AOL users, remove mailto:; Send list messages to: mailto:G-Books@mail.maclaunch.com To unsubscribe, email: mailto:[EMAIL PROTECTED] For digest mode, email: mailto:[EMAIL PROTECTED] Subscription questions: mailto:[EMAIL PROTECTED] Archive: http://www.mail-archive.com/g-books%40mail.maclaunch.com/ --- iPod Accessories for Less at 1-800-iPOD.COM Fast Delivery, Low Price, Good Deal www.1800ipod.com ---
UPDATE - USB Hub killed two Macs... ???
Cuda Cuda Cuda!!! http://mrjcd.com/junk/CUDA.jpg Yes, Cuda saves the day!!! Acts as if nothing happened... I will now be testing the hub a bit more in depth as I know it doesn't actually kill the iMac(s), only puts them in a coma... ;o) Larry _ Express yourself instantly with MSN Messenger! Download today it's FREE! http://messenger.msn.click-url.com/go/onm00200471ave/direct/01/ -- G-Books is sponsored by http://lowendmac.com/ and... Small Dog Electronicshttp://www.smalldog.com | Refurbished Drives | -- Check our web site for refurbished PowerBooks | CDRWs on Sale! | Support Low End Mac http://lowendmac.com/lists/support.html G-Books list info: http://lowendmac.com/lists/g-books.html -- AOL users, remove mailto:; Send list messages to: mailto:G-Books@mail.maclaunch.com To unsubscribe, email: mailto:[EMAIL PROTECTED] For digest mode, email: mailto:[EMAIL PROTECTED] Subscription questions: mailto:[EMAIL PROTECTED] Archive: http://www.mail-archive.com/g-books%40mail.maclaunch.com/ --- iPod Accessories for Less at 1-800-iPOD.COM Fast Delivery, Low Price, Good Deal www.1800ipod.com ---
Re: USB Hub killed two Macs... ???
The CUDA switch does function as a reset switch but they're not the same. The external reset switch just restarts the computer like command-control-power key. On 01/03/2005, at 03:49, Laurent Daudelin (No, I'm not a contractor) wrote: On 28/02/05 12:09, Larry le Mac [EMAIL PROTECTED] wrote: To the best of my knowledge (and I have studied electronics at Uni for 4 years) a powered hub simply boosts the signal out to the connected devices, and can be used as an unpowered hub with the PSU unplugged. It should not affect the computer end of the hub. Obviously there might be something wrong with the hub, but still odd IMO. I had a small brainwave and I'm going to try pressing the reset button and see if this helps revive the iMacs. Question (I know this is not the iMac list) is the external reset switch (tiny resessed thing by the USB port) the same as the Cuda switch ??? I'm not 100% sure but usually, the reset switch is NOT the CUDA switch. On my PowerMac BW G3, the external reset switch doesn't seem to have anything to do with the CUDA switch which is on the motherboard. However, they could be the same thing. Here is what Apple says about the CUDA chip: The Cuda is a microcontroller chip on the Power Macintosh G4 (PCI Graphics) logic board. and: The function of the Cuda chip is to: ? Turn system power on and off. ? Manage system resets from various commands. ? Maintain parameter RAM (PRAM). ? Manage the real-time clock. -Laurent. -- === = Laurent Daudelin Developer, Multifamily, ESO, Fannie Mae mailto:[EMAIL PROTECTED]Washington, DC, USA Usual disclaimers apply *** -- G-Books is sponsored by http://lowendmac.com/ and... Small Dog Electronicshttp://www.smalldog.com | Refurbished Drives | -- Check our web site for refurbished PowerBooks | CDRWs on Sale! | Support Low End Mac http://lowendmac.com/lists/support.html G-Books list info: http://lowendmac.com/lists/g-books.html -- AOL users, remove mailto:; Send list messages to: mailto:G-Books@mail.maclaunch.com To unsubscribe, email: mailto:[EMAIL PROTECTED] For digest mode, email: mailto:[EMAIL PROTECTED] Subscription questions: mailto:[EMAIL PROTECTED] Archive: http://www.mail-archive.com/g-books%40mail.maclaunch.com/ --- iPod Accessories for Less at 1-800-iPOD.COM Fast Delivery, Low Price, Good Deal www.1800ipod.com --- -- G-Books is sponsored by http://lowendmac.com/ and... Small Dog Electronicshttp://www.smalldog.com | Refurbished Drives | -- Check our web site for refurbished PowerBooks | CDRWs on Sale! | Support Low End Mac http://lowendmac.com/lists/support.html G-Books list info: http://lowendmac.com/lists/g-books.html -- AOL users, remove mailto:; Send list messages to: mailto:G-Books@mail.maclaunch.com To unsubscribe, email: mailto:[EMAIL PROTECTED] For digest mode, email: mailto:[EMAIL PROTECTED] Subscription questions: mailto:[EMAIL PROTECTED] Archive: http://www.mail-archive.com/g-books%40mail.maclaunch.com/ --- iPod Accessories for Less at 1-800-iPOD.COM Fast Delivery, Low Price, Good Deal www.1800ipod.com ---
