UDL(4) Kernel Interfaces Manual UDL(4) NAME udl -- DisplayLink DL-120 / DL-160 USB display device driver SYNOPSIS To compile this driver into the kernel, place the following lines in your kernel configuration file: device udl device videomode Alternatively, to load the driver as a module at boot time, place the following line in loader.conf(5): udl_load="YES" HARDWARE The udl driver supports USB display devices based on the DisplayLink DL-120 and DL-160 graphic chips, including: * 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) * HP USB Graphics Adapter (NL571) * IOGEAR USB 2.0 External DVI (GUC2020) * Koenig CMP-USBVGA10 and CMP-USBVGA11 * Lenovo 45K5296 USB to DVI * Lenovo ThinkVision LT1421 * Lilliput UM-70 * Nanovision MiMo UM-710 and UM-740 * Rextron VCUD60 USB to DVI * Samsung LD220 * StarTech CONV-USB2DVI * Sunweit USB to DVI * Unitek Y-2240 USB to DVI * VideoHome NBdock1920 * i-tec USB 2.0 Docking Station (USBDVIDOCK) SEE ALSO usb(4) HISTORY The udl driver appeared in OpenBSD 4.6 and FreeBSD 11.0. FreeBSD 15.1 December 23, 2025 UDL(4)
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