User guide

ZIC2410 Getting Started Guide
Rev E Document No. 0005-05-08-11-001 Page 13 of 22
4.1.3 Checking the COM port with Multiple Devices Connected
If connecting several components to a single PC through USB connections it will be
necessary to enumerate the new component as performed in Section 4.1.1. As with a
single component connected, it is necessary to identify the individual COM ports used for
each component. The Device Manager will not distinguish between individual components,
but rather will display identical ‘CP210x USB to UART Bridge Controller (COM#)’ entries
as shown in Figure 11.
Figure 11 – Screen, Device Manager (2 devices connected)
If the COM port # for each component was not noted as it was enumerated, the
corresponding COM port assignments can be determined by powering off each component
one-by-one and noting which COM port assignment disappears (after a few seconds).
NOTE: If multiple components have the same COM port assignment (i.e. two components register
as COM4), see Appendix A of this document to set the Device ID of the component to a unique value.