Usb; Specifications; General Features; Usb Connector - Gestetner B130 Service Manual

4.8 USB

4.8.1 SPECIFICATIONS

Interface: USB 2.0
Data rates: 480 Mbps (high speed)/12 Mbps (full speed)

4.8.2 GENERAL FEATURES

The USB (Universal Serial Bus) offers simple connectivity for computers and their
peripherals. You do not need terminators or device IDs. The USB provides the
following features:
• Plug & Play: When you connect a device to a computer, the computer recognizes
the device and activates the correct driver. If the computer does not find a correct
driver, it outputs a message.
• Hot swapping: You can connect the cable to an active device while the device is
powered on.
• No terminator required
• No device ID required
• 480-Mbps (high speed)/12-Mbps (full speed) transfer rate
• Bi-directional data transfer between computers and peripherals with 4-byte
headers and device IDs
• Connectivity of up to 127 peripherals (up to 6 cascade connections possible)
• Power supply from the computer
• 5-m cable (at the maximum)

4.8.3 USB CONNECTOR

The USB has a serial protocol and a physical link. The USB
cable contains two pairs of wiring: one pair transmits data
and the other pair transmits electricity for downstream
peripherals. There are two types of connectors: Type A [A]
is for the connection on the upstream and Type B [B] is for
the connection on the downstream.
SM
CÓPIA NÃO CONTROLADA
21
CÓPIA NÃO CONTROLADA
USB
[A]
B683D912.WMF
[B]
B683D913.WMF
B683