SMB is a network protocol developed by Microsoft. It’s the protocol used by Windows computers to share files with each other. But the protocol was reverse-engineered and a program called Samba provides SMB functionality on Linux. You only see print$ because your Samba isn’t configured with any file shares. You’ll have to configure it. You can find guides online about how to configure Samba. Samba also maintains its own user list independent of the system. That’s why your local account password didn’t work.
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2·9 months agoThe primary concern is switchover time. A purpose-built UPS can switch in about 10 microseconds. Those large “solar generator” battery packs switch in about 30 microseconds. That might be fast enough, but it’s not guaranteed to be fast enough like a UPS is.
UPS batteries are only rated for a few years’ use, so you probably are due for replacement.
But it can draw more current than the line is rated for. Everything electrical is about “can”, not “will”.
Divide 3000VA by your line voltage to get the required amps. Here in the States, I’d need a 30A circuit at 120V and would absolutely have to run a new line from my breaker panel.
::1 is a compelling alternative
Have you shopped eBay for used switches?