Lenovo ThinkStation P920 Manual page 12

How to Utilize the Onboard Intel SATA Controller
In the P520c 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 onboard Intel SATA controller
supports up to 4 drives (2 drives in the HDD bays and 2 drives in the FLEX bays).
FLEX Bay Power
Cable – 3 drop
Data Cable
HDD bay 1
HDD bay 2
HDD Bay Power
Cable – 2 drop
SATA 2
SATA 1
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