Lenovo ThinkStation P920 Tower Workstation - Manual (Page 144)

b. If your computer comes with a Wi-Fi card that supports the Bluetooth function, disconnect the
Bluetooth cable from the Wi-Fi adapter.
Figure 126. Disconnecting the Bluetooth cable
c. On the rear of the computer, lift the handle 2 and pivot it as shown until it stops. The PCIe card latch
1 is opened.
Figure 127. Opening the PCIe card latch
132 P920 User Guide