Interface Box is the core block of this mod, that gives you access to the API's exposed by the mod.

You will place the Interface Box block down and connect it to a computer

Access from computer mods

In general API's works the same from any computer mod, the difference may lay in how to obtain the root API called "Interface Box"

ComputerCraft

In ComputerCraft the Interface Box will be accessable as a Peripheral

local interfaceBox = peripheral.find("interface_box")

The Interface Box may be connected by placing it directly next to a computer, or connected though cables using the modem.

OpenComputers

In OC the Interface Box will be accessable as a Component

local component = require("component")
local interfaceBox = component.getPrimary("interface_box")

Or using the shortcut

local component = require("component")
local interfaceBox = component.interface_box

The Interface Box may be connected by placing it directly next to a computer, or connected though cables