Source: LinkThe M.2 SSD is mounted with a thermal pad so that the adapter card alone can already offer a passive cooling. For the best cooling performance the adapter card can be also used with a passive heat sink made of black anodized aluminum or a water block made of copper. When using these heat sinks a second thermal pad also covers the front side of the M.2 SSD.
The water block offers common G1/4 threads into both directions. The connector terminal is the same as used for Aqua Computers kryographics blocks. This allows using kryoconnect adapter kits to connect several blocks directly with each other.
Wow pretty nifty! I actually just picked up an AngelBird PX1 Heat-sink.