Hardware reference guide

Chapter 4: Connecting
USB Serial Connections
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7535 Hardware Reference Guide
Double-click the PC Connection icon in the Control Panel. The PC Connection
Properties dialog appears. Verify that the checkbox that allows connection to the
desktop is checked:
“Connect Using” specifies the port to be used for connecting to the PC:
• USB specifies using the USB Type-B (client) port of the 7535. This port is
provided on the Portable Docking Module.
• Bluetooth specifies using the internal Bluetooth connection of the 7535 (if
present). This connection may have a different name.
To change the connection type, click on the Change Connection... button and select
the connection from the dropdown list.
4.2 USB Serial Connections
The USB architecture defines a “host” device that can communicate with up to 127
client devices through a serial connection. When the host device powers up, it
queries the USB bus, identifying devices.
USB serial connections are available at a number of different data rates.
• “High speed” USB devices communicate at 480 Mb/s.
• “Full speed” USB devices communicate at 12 Mb/s.
• “Low speed” USB devices communicate at 1.5 Mb/s.
USB devices may be self-powered, or powered through the USB cable.