Dell Precision YT583 User Manual page 192

10 Ensure that memory riser card 3 is above system-board connector
DIMM_3 and memory riser card 4 is above system-board connector
DIMM_4.
Align the notch on the bottom of each riser card with the crossbar in each
system-board connector.
11 Insert the riser cards into the connectors until both riser cards snap into
position.
NOTE:
If a memory-riser power cable is not plugged in, the system will not boot.
3
1 power connectors
3 securing clips (2)
12 Connect the power cables to memory riser cards 3 and 4.
13 Ensure that memory riser card 1 is above system-board connector
DIMM_1 and memory riser card 2 is above system-board connector
DIMM_2.
Align the notch on the bottom of each riser card with the crossbar in each
system-board connector.
192
Adding and Replacing Parts
1
2 connector
2