Kingston Technology KNE12TX/RS Using a Straight-Through Cable Using a Crossover Cable, Config

8 Hardware Installation

		Use the MDI-X port
		when connecting to
		a network	card or
		other MDI	device.
8	8

		Use the MDI port
		when connecting to
		a hub or other MDI-X
		device.
8	8

Using a Straight-Through Cable

Using a Crossover Cable

	Use	the MDI port
	when connecting to
	a network		card or
8	other	MDI	device.	8
	8		8

Use the MDI-X port when connecting to a hub or other MDI-X device.

Notes on MDI and MDI-X Ports

MDI (Media Dependent Interface) is the standard that defines the mechanical and electrical configuration of a UTP port. For any two devices to communicate with each other on the network, the transmitter of one device must be connected to the receiver of the other device. This can be achieved by using a crossover cable, or by using the MDI-X port, which implements the crossover internally.

Ports 1 thru 7 (KNE8TX/RS), ports 1 thru 11 (KNE12TX/RS), and ports 1 thru 23 (KNE24TX/RS), like all normal hub ports, are configured as MDI-X. The last UTP port has two (2) RJ-45 connectors in order to support both MDI and MDI-X configurations for flexibility when uplinking to another Class II repeater using either cable type. All NICs (Network Interface Cards) and Router ports are usually by default configured as MDI. A simple illustration shows the relationship of cable types to port types:

	Port	Port	For Connection to	For Connection to a Network
Connector		Config	Another Hub Port (MDI-X)	Adapter or Router (MDI)
		MDI-X	Use Crossover cable	Use Straight-through cable
		MDI	Use Straight-through cable	Use Crossover cable

Table 1. Port Configurations

Kingston Technology Company KNE24TX/RS User’s Guide - Rev. A01