Dell Latitude E6420 XFR (Early 2011) - Manual (Page 61)

Dell ™ Latitude™ E6420 XFR Service Manual
Page 61
20. Lift the system board out of the base assembly.
NOTE: HDMI Bracket and HDMI Route Adapter should be transferred to replacement system board assemblies.
21. Remove the one M2 x 3mm screw securing the HDMI Route Adapter to the HDMI Bracket.