Dell PowerEdge R740xd Installation And Service Manual page 178

Figure 136. Cable routing – 24 x 2.5 inch NVMe drive backplane
1 backplane
3 backplane power cable A
5 PCIe cable B (PE2_B)
7 PCIe card on riser 2 (slot 4)
9 PCIe cable A (PE1_A)
11 backplane power cable B
178 Installing and removing system components
2 backplane signal cable A
4 PCIe cable A (PE2_A)
6 backplane signal cable B
8 PCIe card on riser 1 (slot 3)
10 PCIe cable B ( PE1_B)
12 backplane expander