My IOGEAR sdCardReader/Writer is recongized on Ubutu(by using VM ware) but when I tried to connect to "Removable Devices - Alcor Micro Flash Card Reader/Writer" , the follwoing message is appeared. " The connection for the USB device "Alcor Micro Flash Card Reader/Writer" was unsuccessful. The device is currently in use. " But I think it is not used. Should I use IOGEAR driver for this one? When I connect the card reader, Ubuntu automatically got the "Alcor Micro Flash Card Reader/Writer" . How can I fix the problem? Thank you, Insuk the result of lsusb: Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 001 Device 002: ID 0b95:7720 ASIX Electronics Corp. AX88772 Bus 002 Device 002: ID 0e0f:0003 VMware, Inc. Virtual Mouse Bus 002 Device 003: ID 0e0f:0002 VMware, Inc. Virtual USB Hub Bus 002 Device 004: ID 0e0f:0008 VMware, Inc. Bus 002 Device 005: ID 0403:bcda Future Technology Devices International, Ltd From the vmware log : 2013-10-18T09:00:07.494-06:00| vmx| I120: USB-CCID: Could not establish context: SCARD_E_NO_SERVICE(0x8010001d). 2013-10-18T09:00:07.494-06:00| vmx| I120: USB-CCID: Could not establish context: SCARD_E_NO_SERVICE(0x8010001d).