Holder for a fan that can be used together with an Intel X540-T2 10G network card. These cards are also sold under the brand "Inspur" and heat up quite quickly during normal operation. The temperature reaches values that can even damage the motherboard. A small 40 mm cooler (in my case a Noctua NF-A4x10 FLX) ensures sufficient cooling and safety during operation.
The author marked this model as their own original creation.