That suggests your machine simply does not have serial ports configured.
To verify, run msinfo32.exe; click Components->Ports->Serial.
In the context of this thread, the usability of Win32::SerialPort under 32 & 64 bit Perls is telling you nothing useful.
In reply to Re^4: Using 64 Bit Perl for Production Scripts.
by BrowserUk
in thread Using 64 Bit Perl for Production Scripts.
by pmu
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