I need help understanding how a scale integrates with Square software.

[VenstraFarm]

Hi, I recently purchased a square terminal that I use with my ipad running the square app. I am looking to purchase a digital scale that will allow me to sell my produce by weight, but I am having a hard time finding the info I need to understand how the scale can integrate with my terminal or ipad. 

My main question is regarding how to physically connects. I am looking to purchase the CAS PD-2 scale, from what I can see this scale doesn't have a bluetooth option. It looks like it has a 6 or 9 pin serial cable. Where is that cable plugged into? On Square's website it specifically lists this scale as being compatible with the Square Terminal, is that only through a 9 pin to ethernet adapter that I will then plug into the Square Hub? Thank you for your help in advance! 

[TheRealChipA]

@VenstraFarm See the screen shot below from Square’s Hardware Compatibility help sheet.  Circled, it notes that Square supports the USB interface between the CAS PD-2 and your Stand’s USB hub.  That scale has both USB and RS-232 interfaces, it seems.

I hope that helps.