two display adaptors - only one showing in device manager

[mobydoc]

HP pro 3015 microtower had NVIDIA GeForce 9100 Graphics Controller as standard. Want to use additional monitor. Installed Nvidia Geforce 210 in available slot but Device Manager only shows single display adaptor

[banhien]

@mobydoc 

When you install Nvidia Geforce 210 card, it will disable NVIDIA GeForce 9100 Graphics Controller  therefore you can't use internal video port.

I believe the Nvidia Geforce 210 has two ports which are VGA and DVI. Please try those 2 ports.

Regards.

[mobydoc]

@banhien

Thank you for your reply

Both monitors are VGA only

If a non-Nvidia adaptor is used in the expansion slot will this overcome the disabling of the on-board adaptor?

if not, presumably this means that an adaptor with two VGA ports is required. Do such things exist?