StarTech.com USB6N1DOCKGB, Руководство пользователя

Страница: 33 / 34

- Page 31 -
Host Controller The host’s USB interface.
OHCI Open Host Controller Interface
UHCI
Universal Host Controller Interface
USB
Universal Serial Bus
Universal Serial
Bus Driver (USBD)
The host resident software entity responsible for providing common
services to clients that are manipulating one or more functions on one or
more Host Controllers.
Keyed Connector Protocol
：
USB uses a “keyed connector” protocol. The physical difference in the Series “A”
and “B” connectors insures proper end user connectivity. The “A” connector is the
principle means of connecting USB devices directly to a host or to the downstream port of a
hub. All USB devices must have the standard Series “A” connector specified in this
chapter. The “B” connector allows device vendors to provide a standard detachable cable.
This facilitates end user cable replacement.
TYPE MALE FEMALE
A
B
Mini-B
6-pin
Mini Din
6-pin Mini Din Female
Used for I/O applications: mouse, keyboard. The 6-pin Mini
Din connector has 6-pins arranged in a round connector.
Also known as a PS/2 connector
DB9
DB9 Male
Used for serial applications: modem. The DB9 connector
has 9-pins arranged in two rows one on top of the other.
The top row has 5 pins and the lower row has 4 pins.