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USB Powelinc Modems may require recycle after Windows Powers USB port down.Windows 7 is able to disable USB ports for power saving if it thinks they are not needed and re-enables them if they are needed again. Seems to be that sometimes this does not work and basically the devices stop working.
How to Disable USB Power Management in Windows 7
- Press the "Windows" key and "R" key simultaneously. A "Run" box appears.
- Type "Devmgmt.msc," then press "Enter." This loads the Device Manager.
- Double-click on "Universal Serial Bus controllers."
- Double-click on "USB Root Hub." You may have more than one "USB Root Hub" listed in the Device Manager. Double-click on any one of the "USB Root Hubs."
- Click on the "Power Management" tab.
- Uncheck the box next to "Allow the computer to turn off this device to save power."
- Push the "OK" button and close the "Device Manager."
- Repeat steps four through seven if you would like to disable multiple "USB Root Hubs."
How to troubleshoot USB device problems that may occur after a PC that is running Windows 7 or Windows Vista resume from sleep or from hibernation.
PLM Not Found - USB drivers for the Power Line Modem May Require a Reboot
PLM 2412U/2413U - 2010 version seemed a little buggy. 2009 version was good.
Latest FTDI USB drivers http://www.ftdichip.com/Drivers/VCP.htm
The 2010 USB drivers occasionally get caught in a loop, which requires rebooting your computer. Verified using a serial port debugging device, also having unplugged the PLM, reset PLM. The USB driver has been seen to loop using old data. I have also observed incorrect data. Either case results in broken communications with the PLM. This effectively causes any software searching for any USB based Power Line Modem (PLM) 2413U, 2412U from being discovered. A reboot of the computer will clear the situation. This buggy loop does not appear to be related to any foreseeable event. It was not a problem with early drivers from around 2008, but newer drivers supplied in 2010. The port remains available to open and close, but the driver (USB to Serial Port) does not appear to perform properly. This is why a serial port will confirm available with no PLM found. This condition occurs intermittent, and will not occur while the IonW-PLM software is running, but while the port is closed and unused.
Windows XP#2412U may require installing USB drivers downloaded from the Smarthome website. Run the USB driver software. After installation the USB port will be seen as a serial port for the ION software.
Computer Group does not Work
- The PLM may need at least 1 device linked using a set button. – Fix this by clicking on the PLM listing located in the upper left tree control list. Click [PLM Start All-Link Mode], use the set button on any Insteon device you have. The PLM may have a bug where at least 1 device needs to be linked with its set button. This is only pertains to be a fix for software control over computer groups using the PLM to send group commands.
3-1-2013 Update software to detect this condition and link 1 device automatically using software set buttons. (this condition stems from software development from before Insteon devices supported think link function in software.