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My hardware is :

MB - MSI Mortar B550 
CPU AMD Ryzen 5950X
Graphic card : RTX 3060 Gaming 12 Gb

I try to connect two old monitors with only VGA connectors to HDMI port using such cable on the picture There is no signal on the both monitors when i start my PC. If only one monitor connected - everything is ok. I swapped cables,monitors - no signal on the both. Then i inserted one more graphic card and connected second monitor to them - no signal on the both . I checked BIOS - i could'n find suitable option. Any advices?

enter image description here

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  • The RTX 3060 shouldn't have any issues with 2 monitors but that cable looks strange. I wonder if an 'active' converter might work here over a passive (?) one.
    – Journeyman Geek ♦
    Commented Oct 4, 2022 at 11:57
  • Are you sure the old monitors are still functional?
    – harrymc
    Commented Oct 4, 2022 at 13:41
  • Yes, sure. They work if only one connected .
    – harp1814
    Commented Oct 4, 2022 at 14:02
  • How's the power supply? Newish?
    – Canadian Luke
    Commented Oct 4, 2022 at 16:43
  • @CanadianLuke, yes . All components are new
    – harp1814
    Commented Oct 4, 2022 at 17:55

1 Answer 1

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enter image description here

Cables such as the one pictured above CAN'T be used. You need an actual adapter, a digital-to-analogue converter.

The cable you have is a (almost) SCAM!

It isn't a complete SCAM because it has legit usages for old devices, mostly Windows XP "tablets", that used an HDMI connector in lieu of the larger D-SUB (VGA) connector but had no digital outputs whatsoever. They used to come with this sort of cables or shorter plug adapters. But this cables are still being sold more than a decade past its due date WITHOUT any warning about them NOT being fit for the purpose of connecting an actual HDMI output to an old VGA only device, thus fooling too many customers.

You need an actual active converter (examples) and probably better to consider using proper modern monitors with HDMI and DisplayPort inputs. It makes no sense running a new and powerful Nvidia Graphics with old monitors.

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  • On the other hand, it works with one monitor, which is a little strange... unless one of the ports has analog support... oh wait...
    – Journeyman Geek ♦
    Commented Oct 5, 2022 at 3:22

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