Sticky USB Host connectivity limitation

      USB Host connectivity limitation

      By default the number of devices connected to the USB host interface is limited due a memory restrition (~5 devices). This is related to all Windows Embedded CE/Compact kernel images. To solve this you need to increase the PhysicalPageSize value in registry:

      [HKEY_LOCAL_MACHINE\Drivers\BuiltIn\OHCI]
      PhysicalPageSize=dword:10000 ; default value

      A value of 0x40000 (256KB) should be sufficient:

      Source Code

      1. reg open \Drivers\Builtin\OHCI
      2. reg set val PhysicalPageSize dword 0x40000
      3. reg save
      Software developer, F&S Elektronik Systeme GmbH
      As this is an international forum, please try to post in English.
      Da dies ein internationales Forum ist, bitten wir darum, Beiträge möglichst in Englisch zu verfassen.