Usb; Specifications; Usb 1.1/2.0 - Ricoh B867 Manual

USB

5.7 USB

5.7.1 SPECIFICATIONS

USB connectivity is provided as an option for this machine.
Interface: USB 1.1, USB 2.0
480 Mbps (high speed), 12 Mbps (full speed), 1.5 Mbps (low speed)
Data rates:
High speed mode is only supported by USB 2.0.

5.7.2 USB 1.1/2.0

USB (Universal Serial Bus) offers simple connectivity for computers, printers, keyboards,
and other peripherals. In a USB environment, terminators, device IDs (like SCSI), and DIP
switch settings are not necessary.
USB 1.1 provides the following features:
Plug & Play. As soon as a new device is connected via USB, the operating system
recognizes it, and the appropriate driver is installed for it automatically if the driver is
available. If the driver is not available, a message prompts the user for the driver for
immediate installation.
Hot swapping (cables can be connected and disconnected while the computer and
other devices are switched on)
No terminator or device ID required
Data rates of 12 Mbps (full speed), and 1.5 Mbps (low speed)
Common connectors for different devices
Bi-directional data communication between device and host computer via a 4-byte
header and DEVICE ID.
USB 2.0 is an evolution of the USB 1.1 specification. It uses the same cables, connectors,
and software interfaces so the user will see no change. It provides an easy-to-use
connection to a wide range of products with a maximum data rate of 480 Mbps (high
speed).
Up to 127 devices can be connected and 6 cascade connections are allowed. Power is
supplied from the computer and the maximum cable length is 5 m.
B867 142 SM