One thing to check is that if a UPS is equipped with both a serial and USB interface, you can usually only use one at a time. Many use share the same hardware for both interfaces, so when not in use, you should not plug in anything to these ports. Switching between these may require switching off the UPS and back on again.
Best regards, Arjen -- Eindhoven - The Netherlands Key fingerprint - 66 4E 03 2C 9D B5 CB 9B 7A FE 7E C1 EE 88 BC 57 _______________________________________________ Nut-upsuser mailing list Nut-upsuser@lists.alioth.debian.org http://lists.alioth.debian.org/mailman/listinfo/nut-upsuser