Dell PowerEdge R930 Owner's Manual page 166

Figure 97. Installing the 2.5 Inch (x24) SAS/SATA plus (x8) PCIe SSD backplane
1 primary PCIe SSD extender mini-SAS HD connector (4)
3 secondary PCIe SSD extender mini-SAS HD connector (4)
5 backplane hook (8)
7 power connector on the system board (2)
9 miscellaneous signal connector on the system board
11 guide
13 expander connector
Next steps
1 Reconnect the SAS/SATA/PCIe SSD data, signal, and power cables to the backplane and system board.
2 Route the control panel/USB cable, PERC card cable, and PCIe SSD cables along the left side of the chassis wall.
3 Route the PERC card cable first, and then the PCIe SSD cables along the right side of the chassis wall.
4 Install the following:
a SAS expander daughter card
b Memory riser and fan cage
c Cooling fans
d Memory risers or memory riser blank, as applicable
e Hard drives
f Front bezel, if removed
5 Follow the procedure listed in the After working inside your system section.
166 Installing and removing system components
2 release tab (2)
4 hard drive connector (24)
6 backplane power cable (2)
8 memory riser guide
10 backplane miscellaneous signal cable
12 backplane jumper connector