A graphics card with two outputs works fine with two CRTs, provided the second output (usually digital) has a digital/analog connector. If you look at the white connector in the image above, you'll see 24 holes arranged in 3 rows, and on the right side 4 holes and a slit. This connector is both digital and analog. With the supplied converter plug you can attach a second CRT.
Most modern display adapters have connectors like that. If the 4 holes around the slit are missing, it's a digital-only connector!
Hope this helps, Steven.

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