USB card with multiple devices

[Ibsen S Ripsbusker]

I am finding bhyve PCI passthrough to be very convenient. I give
different USB cards to different hosts so I can use USB devices whose
drivers are not very good with hot-plugging or are not very good
in general.

I am consequently running out of PCI slots. Does anyone know
of a supported PCI or PCIe card that provides several USB devices,
so I can pass through different ports on the card to different guests?

Cordially,
Ibsen