Ethernet Diagram Corrected

In Alan Freedman's Computer Desktop Encyclopedia (c. 1999 The Computer Language Co., Inc.) The
diagram for describing how Ethernet connections are made is oversimplified.  The following diagram is
more accurate.  Note that the NIC cards in the PCs (shown in green) are always MDI ports by convention
and hubs are either MDIX or the new automatically configuring MDI/MDIX ports.  

The original diagram is at:
computing-dictionary.thefreedictionary.com/MDI+port