Japan to buy macbookpro, to extend the line there is a short wire, the head there is a small clip, what is the use of ah?
Desktop, right mouse button, properties, open screen assist function, and set to external screen, or vice screen.
Just like the phone operator in the past, if you need to connect which two, just a jumper, one end connected to the patch panel, one end connected to the switch, so and the switch connected. Of course, sometimes there is not necessarily a patch panel where there is a switch, is to do with the node, for example, there are all installed in the cabinet patch panels, respectively, connected to different places, in order to connect the nodes of different places Up, this is you just use the jumper to the two patch panels connected on the line.
The easiest way: material costs + staff wages + equipment depreciation + rent + office fees + sales costs
