https://github.com/torvalds/linux/blob/master/drivers/net/et...
Quite a few of the modules went out without their eeprom programmed correctly, and all of them appear to be plagued by quite mediocre performance from (alleged) inadequate RF shielding on the card.
It looks like they've revised the design, but it's peeved off quite a few of the Banana Pi/Sinovoip customers who have bought them with the intention of using it as a router/ap with their R4. (It's dual-PCIe fingers with unique spacing and requires out of spec PCIe voltages, so it's only practically usable with a BPi R4.)
At the very least, the customers using them as wired-only routers are likely to be having a slightly better experience.