UDL(4)                    OpenBSD Programmer's Manual                   UDL(4)

NAME
     udl - DisplayLink DL-120 / DL-160 USB display devices

SYNOPSIS
     udl* at uhub?
     wsdisplay* at udl?

DESCRIPTION
     The udl driver supports USB display devices based on the DisplayLink
     DL-120 / DL-160 graphic chip.

HARDWARE
     The following devices should work:

           Century Corp. Japan Plus One LCD-8000U
           Century Corp. Japan Plus One LCD-4300U
           DisplayLink USB to DVI
           ForwardVideo EasyCAP008 USB to DVI
           HP USB 2.0 Docking Station (FQ834)
           Konig CMP-USBVGA10
           Lenovo 45K5296 USB to DVI
           Nanovision MiMo UM-710 and UM-740
           Rextron VCUD60 USB to DVI
           Samsung LD220
           Sunweit USB to DVI
           Unitek Y-2240 USB to DVI

FILES
     The device can process compressed data (Huffman pixel difference method)
     to reduce the USB payload.  To generate the compressed data, the driver
     needs to load a Huffman table, which is stored in the following binary
     file:

           /etc/firmware/udl_huffman

     If the Huffman table can't be loaded, the driver will fall back to uncom-
     pressed mode.

SEE ALSO
     intro(4), usb(4), wscons(4), wsdisplay(4)

OpenBSD 4.7                     August 30, 2009                              1
