Fujitsu stylistic lt, Reference Manual

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5-8 Peripheral Interfaces
Universal Serial Bus Port 5
The pen tablet provides a Universal Serial Bus (USB) port that is compliant with the Universal Serial Bus
Specification Revision 1.0. The USB port is a powered USB hub and can support concurrent operation of up
to 127 devices. The Stylistic LT pen tablet functions as a USB host and supports high-power, bus-powered
functions as defined in the USB specification. System resources for the USB are assigned by the operating
system, so no software configuration is necessary; however, it may be necessary to install drivers and
application software to support your USB device.
The pen tablet can supply a maximum of 500 mA at 5 volts (or a 5-unit load as defined by the USB
specification) on the USB connector. Ensure that your USB configuration does not exceed this maximum
load. Note that the conductor gauge and length of your USB cabling will affect the voltage drop and
signal propagation between USB devices. Refer to the Universal Serial Bus Specification for details on cable
requirements or contact your cable vendor. Also note that some USB devices are self-powered and do not
draw power over the USB cable. Contact pin assignments for the USB port are shown in Table 5-10.
Table 5-10 Universal Serial Bus Port Contact Pin Assignments
Contact Pin Locations
Contact
Number
Signal Name Comments
1 5V Cable power (+ 5 volts DC)
2 DATA - Data
3 DATA + Data
4 GND Cable ground
Position 1
Position 2 Position 3
Position 4