Lenovo ThinkStation P510 Hardware Configuration page 27

Description of Commonly Used Storage Hardware in P-Series
ThinkStations
Blind Connect Assembly (BCA)
BCA-P : Blind Connect Assembly consisting of two 8639-SFF (U.2) ports (supporting PCIe, SAS, or SATA
drives) and two 8482-SFF ports (supporting SAS or SATA drives). The assembly also consists of the
following cable connections:

One 4-pin power connector that connect to the motherboard

Two mini-SAS HD connectors that connect to the Multi-IO FLEX adapter (for PCIe
connections) labeled "P1" and "P2"

One mini-SAS HD connector labeled "S/X" that connect to either the onboard
controller or Avago controller

LEDs light up next to each port to show which ports on the BCA are functional and
which drive types each port can support based on the controller(s) the BCA is
connected to.

When the "S/X" cable is connected to an Avago controller, all 4 ports on the BCA are
active and show as supporting SAS and SATA via the LEDs.

When the "S/X" cable is connected to the onboard Intel controller, only two of the
ports on the BCA are active and show as supporting SATA via the LEDs.

When the "P1" and "P2" cables are connected to the Multi IO FLEX Adapter, the PCIe
LEDs will illuminate to show which ports are capable of supporting 2.5" PCIe drives.