Series 1 Hold Down:

Nvidia 5900 and earlier cards

ATI X850, X800 and earlier cards

Series 2 Hold Down:

For Nvidia 6800 and 7800 series

For ATI X1800, X1900 Series

Series 2-S Hold Down:

For Nvidia 6800 and 7800 series

For ATI X1800, X1900 Series

Stainless steel "X" included, replaces acrylic "X"