Or
save some clicks by creating a shortcut to the file devmgmt.msc in Windows\
System32.
To view a COM port in the Device Manager, click Ports (COM & LPT),
right-click a COM port, and select Properties. The Properties window has several
tabs that display the port??™s property pages. A vendor-provided co-installer
can supply custom property pages for vendor-specific device properties. The
pages shown below are typical.
The General tab has basic information about the port.
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The Port Settings tab displays the default settings for the port. A USB/serial converter
doesn??™t use the bit rate, parity, and Stop bits in communications between the PC and
the converter, but a driver can send these values to a device that uses the settings on its
serial port. For example, a USB/RS-232 converter can set the parameters of its RS-232
port to match values specified on the PC. The Advanced Settings window enables setting
buffer properties and the COM-port number. Applications can change the parameters
from the default values set in the Device Manager.
Chapter 3
34
The Driver tab enables updating, disabling, and uninstalling the drivers assigned to the
port. The Driver Details window lists the drivers the device uses.
COM Ports on PCs
35
The Details tab has a drop-down Property box that provides access to a variety of information
about a port, including device instance, hardware, and compatible IDs, class
installers and co-installers, and power-state information.
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