Step 7 Install MegaRAID Express 500
Choose a 3.3 V or 5 V PCI slot and align the MegaRAID Express 500 controller card bus connector to the slot. Press down gently but firmly to make sure that the card is properly seated in the slot. The bottom edge of the controller card should be flush with the slot.
Insert the MegaRAID Express 500 card in a PCI slot as shown below:
Screw the bracket to the computer frame.
60MegaRAID Express 500 Hardware Guide