For my RAM Promaster Van build I needed to a device that connects the battery with 2 inputs, and 2 outputs. The inputs are a Lynx Battery Charger, and a Renogy DC-DC On-Board Battery Charger with Solar-2-DC Charger. The outputs are a 12V FuseBlock, and an Olteanp 2200 Watts Pure Sine Wave Inverter DC2AC inverter.

Victron Lynx In does not support Mega Fuse install
Hence I bought a Victron Energy Lynx Power In. When it came to the install, it turned out that this model did not support mega fuses, unlike the Victron Energy Lynx distributor. I was about to return the unit and buy the Distributor (Out) model, when I realized the only thing missing from the 'In' was a 2nd set of bolts for the positive connections where the mega fuse would connect with the out positive line.
Convert Victron Lynx In to support Mega Fuses

After examining the unit more closely it showed holes for the bolts, and it turned out that the plastic section with the holes can be removed by unscrewing 4 little screws. When removed, you can install the bolts in the holes and place the plastic section back on. The 4 little screws did require a special screw driver, called a spanner screwdriver.

With the bolts in place, you need to add a nut to level the fuse install. Don't tighten the nut too tight so the bolt has some play, making it easier the install the megafuse. Then install the positive plus wire on top of the fuse and tighten them down with a washer, lock washer and a nut.

Save money using a Victron Lynx In vs an Out
With this little conversion, not only did did I save myself the trouble of the product return, but also saved myself $80 for the more expensive Distribution unit, which at the moment of writing is actually not available on Amazone. Products with affiliated Amazon linkes mentioned in this post are: