The hub only come with three USB ports, I have four pieces of hardware to connect. How is that done?

I have the same issue. I would like to use the dock for the chip reader but need an extra port to plug it into. I hope Square will work on this.

 

 

I have found the the contacless reader lasts most or all of the day even on busy days and if it starts to get low or there is a lull in customers we just plug it into a USB cord pluged into the wall.  It can be operated while charging and easily disconnectable if you really need to move it around.  Then simply plug it in overnight and you're good for the next day.

I already do that and yes it works until the power goes out - then it must be "bluetoothed" again. The problem becomes that to do this there must be personel who can do it. The personel hereare all volunteer and mostly older who are not savy to how to do this and it may come up so seldom that we do not practice it. My hope is that you can create a 4 slot hub so we can plug in all accessories.

I understand! My mother works my shop while I still have a full time job and she's not tech savvy either!