Hi, > is there a device does these kind of IOCTL reads so i can setup > up the 'struct usb_ctl_request' correctly ?? OpenCT uses these kind of IOCTL's. Just take a look at the ifd_sysdep_usb_control() function in http://www.opensc-project.org/openct/browser/trunk/src/ifd/sys-bsd.c for an example. David