Lenovo ThinkStation PX Manual page 15

5. Install the Broadcom adapter in an open PCIe slot (refer to the
installation order).
6. Connect the Broadcom NVME Bay2/Bay3 Gen4 cable plugs C0 & C1 to
corresponding ports C0 and C1 on the Broadcom adapter.
7. Connect the drive activity LED cable to the J10 pins on the Broadcom adapter and
to pins on the system board labeled "Drive_ACT".
SuperCap retention bracket.
8. Install the
Back of the system
*Assembly instructions shown below.
HMM for PCIe slot
15