Fujitsu PRIMERGY GX2560 M7 Upgrade And Maintenance Manual page 256

Liquid cooling (LC)
Installing the GPU LC kit and the GPU board carrier
Figure 232: Removing foils from thermal pads
Thermal pads have foils on both sides. First remove the foil from one
side, then attach the thermal pad to right place. Before placing heat sink,
remove the second foil.
Figure 233: Attaching thermal pads to the GPUs
▶ Attach thermal pads on all GPUs and around all GPUs.
256 Upgrade and Maintenance Manual GX2560 M7