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#1
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how to give energy to USB devices? with notebook off!!!
Is there something to use to give energy to USB devices?
For example if I want to use my USB calculator when my notebook is off, there's a device (for example with battery) to give energy? Thanks |
#2
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On Tue, 9 Sep 2003 17:24:05 +0200, "andrea rossi"
wrote: Is there something to use to give energy to USB devices? For example if I want to use my USB calculator when my notebook is off, there's a device (for example with battery) to give energy? Thanks Get a self powered USB hub |
#3
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Since the hub itself is a USB device, and the hub will not be enumerated by
the powered off laptop, the downstream ports should remain unpowered. Marc Reinig System Solutions "Jim Turner" wrote in message s.com... On Tue, 9 Sep 2003 17:24:05 +0200, "andrea rossi" wrote: Is there something to use to give energy to USB devices? For example if I want to use my USB calculator when my notebook is off, there's a device (for example with battery) to give energy? Thanks Get a self powered USB hub |
#4
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On Tue, 09 Sep 2003 20:21:44 GMT, "Marc Reinig"
wrote: Since the hub itself is a USB device, and the hub will not be enumerated by the powered off laptop, the downstream ports should remain unpowered. Marc Reinig System Solutions "Jim Turner" wrote in message ws.com... On Tue, 9 Sep 2003 17:24:05 +0200, "andrea rossi" wrote: Is there something to use to give energy to USB devices? For example if I want to use my USB calculator when my notebook is off, there's a device (for example with battery) to give energy? Thanks Get a self powered USB hub Depends on the hub and the device. Devices, such as keyboards and network adapters are powered so they can wake up the system even when it is "off". . |
#5
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Can you tell me which USB keyboards or USB network adapters can wake a
Windows PC when the PC is turned off or which Windows PC keeps USB power on when they are shut off? We're not talking about standby, we're talking about OFF. Perhaps you are thinking of the ability to turn on a MAC through the keyboard? I don't think the above things are possible in Windows. Marc Reinig System Solutions "Jim Turner" wrote in message s.com... On Tue, 09 Sep 2003 20:21:44 GMT, "Marc Reinig" wrote: Since the hub itself is a USB device, and the hub will not be enumerated by the powered off laptop, the downstream ports should remain unpowered. Marc Reinig System Solutions "Jim Turner" wrote in message ws.com... On Tue, 9 Sep 2003 17:24:05 +0200, "andrea rossi" wrote: Is there something to use to give energy to USB devices? For example if I want to use my USB calculator when my notebook is off, there's a device (for example with battery) to give energy? Thanks Get a self powered USB hub Depends on the hub and the device. Devices, such as keyboards and network adapters are powered so they can wake up the system even when it is "off". . |
#6
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Can't give specifics right now. I know that various multimedia keyboards
that are USB and have the power button on them from Microsoft, Logitech, and some others will wake up motherboards I have tried it on from ASUS, ECS, and MSI, although don't have specifics handy right now. Just have to have legacy USB support on in the BIOS, and a real ATX system. Modern ATX systems don't completely power off unless you pull the plug or throw the switch on the back of some power supplies. The 5vsb voltage is there to the PS/2 ports and some USB ports. Have seen some of the optical mice with the lights on and the system "off". JT PS. haven't done anything with Macs for years. On Tue, 09 Sep 2003 23:34:24 GMT, "Marc Reinig" wrote: Can you tell me which USB keyboards or USB network adapters can wake a Windows PC when the PC is turned off or which Windows PC keeps USB power on when they are shut off? We're not talking about standby, we're talking about OFF. Perhaps you are thinking of the ability to turn on a MAC through the keyboard? I don't think the above things are possible in Windows. Marc Reinig System Solutions |
#7
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"Marc Reinig" wrote in message . .. Can you tell me which USB keyboards or USB network adapters can wake a Windows PC when the PC is turned off or which Windows PC keeps USB power on when they are shut off? We're not talking about standby, we're talking about OFF. Perhaps you are thinking of the ability to turn on a MAC through the keyboard? I don't think the above things are possible in Windows. Marc Reinig System Solutions MANY computers keep the USB ports (and PS/2 ports) powered from the 5v SBY .... that's why it's there. These devices can turn on a PC that has been shut down (not put to sleep) |
#8
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Got an HP Pavilion 8790 (Athlon 950) based on an Asus K7M Motherboard and it
has a fancy HP USB keyboard. When the system is OFF (Not asleep), I can power up the system by tapping the spacebar. Got an older Asus P2L97 motherboard (PII 400) that has a PS/2 keyboard attached... Can power it up with the spacebar. Same goes with an USB keyboard... Spacebar powers it up. Marc Reinig wrote in message . .. Can you tell me which USB keyboards or USB network adapters can wake a Windows PC when the PC is turned off or which Windows PC keeps USB power on when they are shut off? We're not talking about standby, we're talking about OFF. Perhaps you are thinking of the ability to turn on a MAC through the keyboard? I don't think the above things are possible in Windows. Marc Reinig System Solutions "Jim Turner" wrote in message s.com... On Tue, 09 Sep 2003 20:21:44 GMT, "Marc Reinig" wrote: Since the hub itself is a USB device, and the hub will not be enumerated by the powered off laptop, the downstream ports should remain unpowered. Marc Reinig System Solutions "Jim Turner" wrote in message ws.com... On Tue, 9 Sep 2003 17:24:05 +0200, "andrea rossi" wrote: Is there something to use to give energy to USB devices? For example if I want to use my USB calculator when my notebook is off, there's a device (for example with battery) to give energy? Thanks Get a self powered USB hub Depends on the hub and the device. Devices, such as keyboards and network adapters are powered so they can wake up the system even when it is "off". . |
#9
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On Tue, 9 Sep 2003 17:24:05 +0200, "andrea rossi"
wrote: Is there something to use to give energy to USB devices? For example if I want to use my USB calculator when my notebook is off, there's a device (for example with battery) to give energy? Thanks Yes, you could buy something like this http://www.goldenshop.com.hk/AI-trad/pc/pc_usbpower.htm or just build your own... not terribly hard since you just need a small 5V wall-wart and a USB outlet from (anything). Dave |
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