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Asus P4P800 - USB device wake-up jumpers question
Hi all,
I'm about to build a new computer, I'm still waiting for the CPU to arrive so I started skimming through my Asus P4P800 SE mobo manual. Everything looks nice and easy except for a few little jumpers. I have a Logitech USB keyboard and I intend to use S3 suspend function (suspend to RAM). I want to be able to wake the system up for S3 using keyboard. On page 2-21 there is USB device wake-up info regarding two sets of jumpers ("USBPW12 USBPW34" and "USBPW56 USBPW78"). "USBPW12 USBPW34" jumpers set the wake-up function for USB ports no 1,2,3 and 4. The latter repsectvely for ports 5,6,7 and 8. The default position is +5V which is set to "wake up the computer from S1 sleep mode using the connected USB devices". Seems clear I have to change the position so it would be +5VSB to wake it up from S3 and S4. Since I make the change for all 4 or 8 ports, is this possible that other USB devices apart from keybopard may cause the system to wake-up? For expample I have a USB printer - if I connect the printer to one of the 4 USB ports which are set to wake-from-S3, won't it wake it up when I turn my printer on? Or scanner? This is definetely not what I want, I only want a keyboqrd to wake up my system. I know that the best way is to try and see, but maybe somebody can clarify that for me. Thanks -- tomasz cenian tcenian at wa dot home dot pl ::::::: :::::: ::::: :::: ::: :: : . // - You've been missing a lot of work lately. // - I wouldn't say I've been missing it, Bob. |
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In article , "Tomasz Cenian"
wrote: Hi all, I'm about to build a new computer, I'm still waiting for the CPU to arrive so I started skimming through my Asus P4P800 SE mobo manual. Everything looks nice and easy except for a few little jumpers. I have a Logitech USB keyboard and I intend to use S3 suspend function (suspend to RAM). I want to be able to wake the system up for S3 using keyboard. On page 2-21 there is USB device wake-up info regarding two sets of jumpers ("USBPW12 USBPW34" and "USBPW56 USBPW78"). "USBPW12 USBPW34" jumpers set the wake-up function for USB ports no 1,2,3 and 4. The latter repsectvely for ports 5,6,7 and 8. The default position is +5V which is set to "wake up the computer from S1 sleep mode using the connected USB devices". Seems clear I have to change the position so it would be +5VSB to wake it up from S3 and S4. Since I make the change for all 4 or 8 ports, is this possible that other USB devices apart from keybopard may cause the system to wake-up? For expample I have a USB printer - if I connect the printer to one of the 4 USB ports which are set to wake-from-S3, won't it wake it up when I turn my printer on? Or scanner? This is definetely not what I want, I only want a keyboqrd to wake up my system. I know that the best way is to try and see, but maybe somebody can clarify that for me. Thanks You should only place the "wake up" devices on +5VSB. +5VSB is not intended to supply large amounts of current. Only equip the ports that really need a +5VSB supply, like the pair of ports used for your keyboard and mouse. USBPW12 x x--x +5VSB --- Keyboard, Mouse on 1 and 2. USBPW34 x--x x +5V --- Other USB devices USBPW56 x--x x +5V --- Other USB devices USBPW78 x--x x +5V --- Other USB devices Occasionally, there will be USB devices that don't seem to initialize correctly, and sometimes it helps to run them from +5VSB, so that those devices are fully powered before the BIOS starts doing any USB bus reset operations. Otherwise, run your USB peripherals from +5V. HTH, Paul |
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