I bought this Dell daughter card to create a direct link between my Synology NAS and a Dell server. Great NIC with both 10Gb and 1Gb ports. Works as expected with good throughput. Again, this card specifically is great because of its purported low power usage. For general transfers of large files (10GB or more), I get transfer speeds of 2-3 Gbps. I’m quite pleased how well this works on such an old Dell rack server.