The following pictures are by Stefan Fuchs and document the assembly of a FLI4L based on a “WRAP” (Wireless Router Application Platform). Details, also see http://www.pcengines.ch.
The base system was extended with an “internal” ISDN card with USB connector (Fritz!Card USB). A click on the respective picture shows a larger view.
Board of the Fritz!Card USB with wired USB connector and isolation on the board
Another view of the Fritz!Card USB with wired USB connector
WRAP inner view with USB connector and the cables from the Fritz!Card USB
USB interface board of the WRAP in detail
Another view of the USB interface board of the WRAP
WRAP casing, front view with additional openings for the CF card and the ISDN connection
USB connector in detail
The complete assembly