Lenovo ThinkStation P920 Manual page 10

How to Utilize the Onboard Intel SATA Controller
In the P520 system, SATA drives are connected to the onboard Intel SATA
controller via a manual plug method. This consists of manually cabling both
power and data to each drive individually. The P520 system supports up to 4
drives using the onboard Intel SATA controller.
Power Cable
2-drop
Data Cable
Power Cable
4-drop
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