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We recently had to replace an old APC SmartUPS 3000 with a newer 3000VA (the 2U one). It has both serial and USB in the back (with an RJ-45 on the end of the serial cable). I can't get the apcsmart driver to connect. I figured it should work the exact same as the old UPS, with /dev/ttyS0 as the port (I'm using the same port on the server that the last one was plugged into). I even