Please note that this card (like some other 10Gbps cards) uses the Marvell AQC113CS chipset (V2) or its predecessor (V1) the AQC107. These chips (very often) suffer from sporadic dropouts. Ironically, I bought this card to compensate for the failed Intel chip I225-V on the motherboard, which also had connection drops and dropouts. Btw. the I226-V has similar problems. Depending on the application, this can have a significant impact (online gaming, Parsec, VR streaming). If you google it, it becomes clear how widespread the problem is. The first attempt was a cheap card with a Realtek RTL8125, which was reliable in the connection without dropouts. But it had poor throughput and ran well below the theoretical port speed. As a result, it suffered from bufferbloat (Google: Waveform Bufferbloat). Ultimately, the Intel X550-T2 (server network card) provided a remedy. Reliable connection, fast transmission and good throughput, no dropouts. Unfortunately expensive in contrast to what you pay for a mainboard that should actually contain a functioning network controller. Ironic that the solution again comes from Intel, who caused my problem.