The following USB controller devices are provided.
xHCI controllers can handle USB 1.0/2.0/3.0.
| name |
bus |
description
|
| nec-usb-xhci |
PCI
|
| qemu-xhci |
PCI
|
EHCI 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
|
Intel 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
|
Controllers under this section support USB 1.1.
| name |
bus |
description
|
| sysbus-ohci |
System |
OHCI USB Controller
|
| pci-ohci |
PCI |
Apple USB Controller
|
