Jeff Geerling put WisdPi's new 10G Ethernet Expansion Card for Framework computers through its paces. It slots into any Framework expansion bay — even on the Framework Desktop — and promises 10-gigabit networking from a tiny module.
The catch is what it reveals. Framework's expansion cards talk to the mainboard over USB-C, and USB-C's bandwidth story is famously tangled: what a given port actually delivers depends on the host, the cable, and the controller. Pair that with Realtek's Ethernet chips — which have their own performance quirks, especially on Linux — and "just add 10G" gets complicated fast.
It's a small product with a big lesson about the gap between a connector's spec sheet and its real-world behavior.
Source: jeffgeerling.com