Nodes are computers registered in your account that will have access to shared USB or COM port devices. FlexiHub allows establishing multiple simultaneous connections (the number of them will depend on your plan).
FlexiHub can send USB and COM port traffic through its own server, in case your nodes do not have real IP addresses.
Flexium subscription includes exclusive access to FlexiHub API. You get everything you need to integrate USB and COM port sharing solution into your own software.
With FlexiAccess and Flexium plans you can work with remote devices in a private or commercial environment, with the latter giving you the ultimate freedom.