Typically, the tied product may be a less desirable one that the buyer might not purchase unless required to do so, or may prefer to get from a different seller. If the seller offering the tied products has sufficient market power in the tying product, these arrangements can violate the antitrust laws.
In general, a hub refers to a hardware device that enables multiple devices or connections to be connected to a computer. An example is a USB hub, which allows multiple USB devices to be connected to one computer, even though that computer may only have a few USB connections. The picture to the right is an example of a USB hub. Note: In the Device Manager, the root hub is your computer and the first USB hub.
Network Connection Device Facts. A hub is the central connecting point of a physical star, logical bus topology. 1  A host sends a frame to another host through the hub. 2  The hub duplicates the frame and sends it to every host connected to the hub.  The host to which the frame is addressed accepts the frame. Every other host ignores the frame.