Recently I’ve been messing around with HDMI cables since I’ve been watching Netflix movies and TV shows on my TV that isn’t smart.
I have noticed that the cables can discern if they’re plugged in or not. If I plug in the cable with my computer off, the TV says “No signal”, and if I disconnect the cable, the TV says “Verify cable connection”. How do the device knows the difference?
I apologize for my poor English.
In: Technology
Ethernet cables contain 4 pairs of wires. When the computer is plugged into the wall, its typical connecting directly to a switch that is in a data closet somewhere nearby (within 300Ft). The computer sends a signal down pair 4 (brown and white brown) to tell the switch that it is plugged in. Then negotiations start for the connection type (speed/duplex).
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