How to select a right angle riser to fit properly into an existing chassis cutout?
There are many ways to go about making a selection. One approach would be to follow the below steps: 1. Put your I/O card into the desired chassis cutout, without a riser. 2. Measure the distance from the center of the I/O card’s PCB to the top of the motherboard. 3. Subtract that distance by 0.3″ for PCI slot, 0.25″ for AGP slot or 0.14″ for PCI-Express slot. The result should be the proper connector center height of a right angle riser card. 4. Select a riser card with a connector center height that is the closest match to the calculated height (in step #3). One can use the riser comparison chart for easier selections.