I’m making an attempt to attach three shows. I can allow any two of the three shows at one time, however by no means three at one time.

– The configuration is a Dell PC with three exterior shows (particulars under).
– All shows are utilizing Displayport connections by way of a Displayport splitter with MST.
– At energy up, the Home windows startup icon seems on all three shows.
– All shows get recognised and proven within the Intel Graphics Command Centre, though the third one is disabled (see 1st picture). Clicking Allow has no impact.
– Two shows are proven within the Intel HD Graphics Management Panel. The third one seems within the drop down picks, the place I can sucessfully change between all of them (see 2nd picture)
– Home windows does present the third monitor inside Settings, however as a small picture (see third picture).
– I’ve disabled/enabled the drivers for the show adapter and every monitor with out impact.
– I’ve tried each mixture of powering down/up for the units with out impact.
– I’ve not up to date drivers with any from Intel. I’m utilizing the Home windows supplied ones.
– I’ve tried a distinct DP splitter with out impact.

My configuration is:
– PC is Dell Optiplex 3020M, i5-4590T @ 2.00Ghz, Home windows 10 Professional 22H2
– Monitor 1 Samsung C32F391
– Monitor 2 Dell U2412M
– Monitor 3 Dell U2412M
– Show Adapter: Intel HD Graphics 4600

The PC helps 3 displays:
https://ark.intel.com/content material/www/us/en/ark/merchandise/80815/intel-core-i54590-processor-6m-cache-up-to-3-70-ghz.html

A 3 monitor configuration is suported by the Intel HD Graphics 4600 card:
https://www.intel.com/content material/www/us/en/help/articles/000025673/graphics.html

I’ve reviewed numerous posts on comparable points, however haven’t been capable of remedy the issue.

Is there any recommendation or additional analysis I can undertake?

Regards
Steve