Hello, This will be the last post from me on this, at least for a while, out of my depth with this stuff. I have Linus' tree up and running with patches recommended by Sarah. "1. Disable scatter-gather for the ax88179_178a driver when it's under an xHCI host. 2. Revert the following commits: f2d9b991c549 xhci: Set scatter-gather limit to avoid failed block writes. d6c9ea9069af xhci: Avoid infinite loop when sg urb requires too many trbs 35773dac5f86 usb: xhci: Link TRB must not occur within a USB payload burst" So far so good with the ax88179_178a connected via the VIA 800 based pcie card. Fingers crossed in saying thanks for coming up with a workable solution, Seeing 117.8MB/s transfers for sending and receiving with mtu 4088. Regards, Will Trives -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html