Gently push out on the socket levers.
Lower the DIMM straight down, and be sure the socket levers secure the module into place.
Lower the memory fan until it snaps into place.
PCI (32-bit, 33 MHz)
PCI Express x16 graphics
PCI x8 (x4 performance)
PCI Express x16 (x4 performance)
For added protection, some cards have PCI retainers installed to prevent movement during shipping.
Ensure that all cables are clear of the fan housing when lowering the memory fan.
Identifying PCI slots
Removing and replacing components