umct — Magic
    Control Technology USB-RS232 converter driver
To compile this driver into the kernel, place the following lines
    in your kernel configuration file:
device usb
device ucom
device umct
Alternatively, to load the driver as a module at boot time, place
    the following line in
    loader.conf(5):
The umct driver provides support for USB
    to RS-232 converters based on the Magic Control Technology USB-232 design.
    These devices support most of the standard RS-232 features including baud
    rates ranging from 300 to 115200 bits per second. However, neither hardware
    nor software flow control seems to be supported.
Access to devices under this driver is via the
    ucom(4)
    framework and device nodes.
The umct driver supports the following
    adapters:
  - Belkin F5U109
 
  - Belkin F5U409
 
  - D-Link DU-H3SP USB BAY Hub
 
  - Magic Control Technology USB-232
 
  - Sitecom USB-232
 
  - /dev/ttyU*
 
  - for callin ports
 
  - /dev/ttyU*.init
 
  -  
 
  - /dev/ttyU*.lock
 
  - corresponding callin initial-state and lock-state devices
    
  
 
  - /dev/cuaU*
 
  - for callout ports
 
  - /dev/cuaU*.init
 
  -  
 
  - /dev/cuaU*.lock
 
  - corresponding callout initial-state and lock-state devices