Nothing in the basket.
Do you use a latest firmware with your Sound Devices MixPre recorder? Version 7.16 adds the ability to route USB 3 and 4 to MixPre-6 and MixPre-6 II channels 5 and 6 or MixPre-10T and MixPre-10 II channels 9 and 10; and fixes incorrectly disabled limiters in some Custom Mode setups as well as USB File Transfer mode can no longer be initiated from a USB keyboard while MixPre is recording. Get the latest firmware here.