On Mon, Sep 12, 2011 at 12:09:07PM -0400, Josh Luthman wrote: > On Mon, Sep 12, 2011 at 12:01 PM, Scott Lambert <[email protected]>wrote: > > > On Mon, Sep 12, 2011 at 08:29:46AM -0500, john wrote: > > > We are trying to get a mikrotik connected to an APC UPS but I'm having > > > no luck. I connect it to a router-board and it just doesn't > > > communicate. Any ideas? > > > > If you are connecting it to the USB port of a 493G, it won't work > > without a power injector on the USB or soldering a jumper wire on > > the back of the 493. > > > > MikroTik didn't actually put any power out on the USB port. > > > > http://forum.mikrotik.com/viewtopic.php?f=3&t=50495 > > > > We did that Friday and it seems to be working so far. > > Interesting, thanks a bunch for the link. Future products will have powered > USB ports as noted by Normis. > > Isn't USB 5v, though? They're all wiring 3.3v.
We are probably taking advantage of the tolerances built into the spec to use what is available. You could problably put a resistor inline with the 7 volt rail to get 5v. It may not work for everything, but 3.3v is working for me. To do it correctly, you can order the Power over USB injector from MikroTik. But that's yet another wall-wart at a yet another voltage at the tower site, cutting down on your on-battery run time. -- Scott Lambert KC5MLE Unix SysAdmin [email protected] _______________________________________________ Mikrotik mailing list [email protected] http://www.butchevans.com/mailman/listinfo/mikrotik Visit http://blog.butchevans.com/ for tutorials related to Mikrotik RouterOS
