The following USB controller devices are provided.
xHCI
editxHCI controllers can handle USB 1.0/2.0/3.0.
| name | bus | description |
|---|---|---|
| nec-usb-xhci | PCI | |
| qemu-xhci | PCI |
EHCI
editEHCI controllers can only handle USB 2.0 (with a few exceptions not included by QEMU), so a companion controller is needed for USB 1.x.
| name | bus | description |
|---|---|---|
| usb-ehci | PCI | |
| ich9-usb-ehci1 | PCI |
UHCI
editIntel and VIA controllers fall into this section. Other vendors tend to use OHCI.
These controllers support USB 1.0 and are more software-intensive than their counterparts, thus less efficient at virtualization.
| name | bus | description |
|---|---|---|
| ich9-usb-uhci1 | PCI | |
| ich9-usb-uhci2 | PCI | |
| ich9-usb-uhci3 | PCI | |
| piix3-usb-uhci | PCI | |
| piix4-usb-uhci | PCI | |
| vt82c686b-usb-uhci | PCI |
OHCI
editControllers under this section support USB 1.1.
| name | bus | description |
|---|---|---|
| sysbus-ohci | System | OHCI USB Controller |
| pci-ohci | PCI | Apple USB Controller |