User`s guide

Appendix A - Troubleshooting
OMG-ISO-COMM Page 13
8. The following are known I/O conflicts:
The 278 and 378 settings may conflict with your printer I/O adapter.
3B0 cannot be used if a Monochrome adapter is installed.
3F8-3FF is typically reserved for COM1:
2F8-2FF is typically reserved for COM2:
3E8-3EF is typically reserved for COM3:
2E8-2EF is typically reserved for COM4:
9. Remember to use diagnostic software when troubleshooting a problem. This
will help eliminate any software issues and identify any hardware conflicts.