Lenovo ThinkStation P7 Manual page 24

The 3.5" bay M.2 kits consist of the internal tray with the M.2 carrier, the blind
connect board (BCB), and the 200mm 84-pin NVME Gen5 cable, shown here:
1. The M.2 carrier itself is identical to the one used for the onboard M.2 drives,
so please follow the installation instructions from that installation section to
install the M.2 drive and heatsink into the carrier and then the carrier into the
internal tray.
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