The MIDI issues I've found with USB3 ports is that my Dark Time is only picked up properly by Windows about half the time. Which I guess may be down to Doepfer rather than the USB port.

I've also an M Audio midisport that simply wouldn't work remotely reliably on a USB3 port under Win 7. Though that's the least of its problems, unless you like your sysex and NRPNs scrambled beyond recognition. Anyway, there's no Win8 driver for it so it's no longer in use. Lesson learned? Avoid M Audio.

tlw
The MIDI issues I've found with USB3 ports is that my Dark Time is only picked up properly by Windows about half the time. Which I guess may be down to Doepfer rather than the USB port.

Could be Windows. With USB 3 devices, I've found I have to boot the computer first to the desktop, then turn on the devices. There are ways around this in theory, but simply doing the right turn-on order works, so there's not a lot of incentive for me to investigate further.

Havn't been on here for a few days, so thanks for all the help. I've got a USB PCI card coming, probably today, and will fit that and see if it fixes some issues. If so, I will stick to USB and get an interface that fits my requirements, which have suddently gone up in complexity!! 4 inputs at least now, provision for seperate phantom powering of at least two of the inputs, and a new multicore/rewire of my sound booth, plus another two pre's. Back to net surfing!!!!! Does it ever end lol!!