Yes , I am on Linux client. And I attach the log as you mentioned above.<div> </div><div>So, I seem to get some inspire, the value of the rule is some item in the log, right ? Thanks! <div class="gmail_quote"> 2012/7/24 Hans de Goede <<a href="mailto:hdegoede@redhat.com" target="_blank">hdegoede@redhat.com</a>> <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"> Hi,<div class="im"> On 07/24/2012 02:22 PM, flooding Controlled wrote: <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"> Hi: The code ''' * @rule1|@rule2|@rule3 * * The default setting filters out HID (class 0x03) USB devices from auto * connect and auto connects anything else. Note the explicit allow rule at * the end, this is necessary since by default all devices without a * matching filter rule will not auto-connect. * * Filter strings in this format can be easily created with the RHEV-M * USB filter editor tool. */ pspec = g_param_spec_string("auto-connect-filter", "Auto Connect Filter ", "Filter determining which USB devices to auto connect", "0x03,-1,-1,-1,0|-1,-1,-1,-1,1", G_PARAM_READWRITE | G_PARAM_CONSTRUCT | G_PARAM_STATIC_STRINGS); g_object_class_install_property(gobject_class, PROP_AUTO_CONNECT_FILTER, pspec); ''' "0x03,-1,-1,-1,0|-1,-1,-1,-1,1" , this is the rule to filter the usb device. I am afraid that my USB print may be filterd by it. Is there any detail descriptions about the rules and how can I make the rule according to my preferences? For exmple , I do not want to automount my USB mouse and keyboard, but my USB print. Can anyone give me some suggestions ? </blockquote> </div> Are you using the Linux or the Windows client? If you've a Linux client, can you please do "lsusb -v > lsusb.log" and send another mail with lsusb.log attached? Thanks, Hans </blockquote></div> </div>