According my experience MXM cards have displayport (or other output type) lines goes from chip to MXM slot. Standard MXM card should have 4 displayport output's pins . Attached pinout picture.Have not actually touched MXM cards, not sure how those would work. Theoretically, they should have similar tables.
No idea how it operates for mobile, where each laptop can have different amount of outputs, beside monitor. I dont even know what the monitor actually uses as an output.
The risk of getting a no output to your laptop monitor (and others as well), is significant. Dont know where the VBIOS is located as well...
On my motherboard only 3 of them goes to physiacal video slots. Also attached vbios files that allow to work one output. Different per each vbios.
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