Fujitsu PRIMERGY RX2540 M7 Upgrade And Maintenance Manual page 276

Expansion cards and backup units
CAUTION
Incorrect cabling may cause wrong LED identification of the HDD/SSD.
Misleading LED could lead to swapping out the wrong HDD/SSD, and
that will result in data loss.
▶
Check the correct cabling using the labels on the cables and the
cable plans.
Example PDUAL CP100 (2x M.2 SSDs SATA RAID PCIe card)
Figure 153: PDUAL CP100
1 PDUAL CP100
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Upgrade and Maintenance Manual
Screws
RX2540 M7