just some troubles when running upsd , the standard "synchronizing ..... giving up" . This is the usb version ... config files below as well as the upsc output . upsdrvctl yields no errors .. thanx for any help upsc : battery.charge: 97 battery.charge.low: 10 battery.charge.warning: 50 battery.date: 2624/00/02 #<- Huh ? battery.mfr.date: 2002/05/08 battery.runtime: 0 battery.runtime.low: 120 battery.voltage: 13.0 battery.voltage.nominal: 12.0 driver.name: newhidups driver.parameter.port: auto driver.version: 2.0.3 driver.version.data: APC HID 0.8 driver.version.internal: 0.28 input.transfer.high: 133 input.transfer.low: 106 input.voltage: 120.0 input.voltage.nominal: 120 ups.beeper.status: enabled ups.delay.shutdown: -1 ups.firmware: 16.b2 .D ups.firmware.aux: b2 ups.load: 47 ups.mfr: American Power Conversion ups.mfr.date: 2002/05/08 ups.model: Back-UPS LS 500 ups.serial: PB0219320746 ups.status: OL CHRG LB ups.test.result: No test initiated upsd.conf: ACL all 0.0.0.0/0 ACL localhost 127.0.0.1/32 ACCEPT localhost REJECT all ups.conf [apc] driver = newhidups port=auto desc="apc 500 ls" upsmon.conf MONITOR apc@localhost 1 monuser password2 master MINSUPPLIES 1 SHUTDOWNCMD "/sbin/shutdown -h +0 .... rest is defaults upsd.users [admin] password = password1 allowfrom = localhost actions = SET [monuser] password = password2 allowfrom = localhost upsmon master instcmds = ALL once again thanx for any help... Leaving for a long trip soon and it would be great if this were working in case of an outage