In the example shown a Technobox P/N 4988 breakout panel
provide two 9 pin d-sub connections for the LVDS channels. Each 9 pin
d-sub connector carries four LVDS pairs and a ground. Note that on a fourth of
the Technobox P/N 4988 breakout panel is in use, allowing other ECMs to use the
remaining six 9 pin d-sub connections.
A serial identification circuit prevents use with
incorrect FPGA IP. LVDS applications include replacement of Legacy ECL systems,
digital video interfaces and general purpose LVDS I/O. Note that LVDS is
not electrically compatible with ECL signaling levels, but offers similar
speeds.

Datasheet
http://www.technobox.com/Datasheet-ECM-5362-Interface-4pgv1-A90305-press.pdf
micro mezzanine system electrical conversion module interface 8 channel low
voltage differential signaling (LVDS) Technobox 5362