Asus AP2400R-E1 - Manual (Page 34)

Chapter 2: Hardware setup 2-20
9. Re-connect the 4-pin power plug
to the connector inside the cage.
When re-connecting the
power plug, place the PCI
cage close enough to avoid
pulling the power cable.
10. Before re-installing the PCI cage
into the chassis, check that all
cables on the PCI cage bay are
properly connected and routed.
Cables on the PCI cage bay
11. Take note of the two pegs on the
PCI cage bay. These pegs should
match the holes on the cage to
make sure it fits in place.
PCI cage pegs