It’s 7:42pm on a Friday. The dining room is full, three servers are stacked at the bar waiting to ring in tickets, and one of your terminals has gone dark. You reboot it. It works for ten minutes. It dies again. If this sounds familiar, the problem almost certainly isn’t your POS software — it’s the network or hardware around it. And that’s why your POS vendor’s helpdesk has been unhelpful: they support the application, not your router, your cabling, or the receipt printer that’s been slowly failing for six months. The five things that actually cause...