However , it is not obvious at a glance to the inexperienced user -LRB- or to a user without sight of the installation -RRB- which way around the connector goes , thus it is often necessary to try both ways .

Sometimes , however , it 's not obvious at a glance to inexperienced users -LRB- or if a user ca n't actually see the plug -RRB- which way the connector goes , so it might be necessary to try both ways .
