Working 10GbE SFP+ NIC

I want 10GbE because my NASes have 10GbE fiber but I cannot fully utilize it.

So I bought a Solarflare SFN5122F, and it works like a charm after installing the driver on official website.

Although the driver seems to be unmaintained, it still works on 10.11, and I've heard good news about using it on 10.12 as well.

I ran some speedtest over CIFS on both NAS, the performance is good, at least the bottleneck is HDD instead of network.