Name
USB — Support for Host-side USB
Universal Serial Bus (USB) is a specification for a serial bus subsystem that offers higher speeds and more features than the traditional PC serial port. The bus supplies power to peripherals and allows for hot swapping. Up to 127 USB peripherals can be connected to a single USB host in a tree structure.
The USB host is the root of the tree, the peripherals are the leaves, and the inner nodes are special USB devices called hubs. Most PCs now have USB host ports, used to connect peripherals such as scanners, keyboards, mice, modems, cameras, disks, flash memory, network links, and printers to the PC.
Say yes here if your computer has a host-side USB port and you
want to use USB devices. You then need to say yes to at least one of
the Host Controller Driver (HCD) options that follow. Choose a USB 1.1
controller, such as UHCI HCD
support
or OHCI HCD
support
, and EHCI HCD (USB 2.0)
support
except for older systems that do not have USB 2.0
support. It does not hurt to select them all if you are not
certain.
If your system has a device-side USB port, used in the
peripheral side of the USB protocol, see the USB Gadget
option instead.
After choosing your HCD, select drivers for the USB peripherals you'll be using. You may want to check out the information provided in Documentation/usb and especially the links given in Documentation/usb/usb-help.txt.
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