On Wednesday 24 December 2008, Bruce Cran wrote: > /usr/src/sys/modules/usb2/serial_chcom/../../../dev/usb2/serial/uchcom2.c The missing define is defined in: /usr/src/sys/modules/usb2/serial_chcom/../../../dev/usb2/include/usb2_ioctl.h Maybe you can check that file. --HPS