Round
you don't have to look for a connection with the ports
this is answer in view of IT and Ethernet port. Answer: An Ethernet port is an opening on computer network equipment that Ethernet cables plug into. These ports are alternatively called jacks or sockets. Ethernet ports accept cables with RJ-45 connectors.
modem
Most cases have the motherboard ports in the back that way you can hide all the cables and keep them away from alot of activity that may disconnect them.I have not seen a PC with front motherboard ports. But i think its better to leave those ports where they are :)
HDMI cables have not ports in a non hd tv so no you should not use them
No. The reverse is the case. Parallel ports are older technology and have been replaced by "printer ports" which accommodate special USB cables with printer plugs.
USB and serial cables
power meter
You can connect a Yamaha HTR-3065 to a Toshiba 40RV753 using either HDMI or optical cables connected to the input ports. Both devices are turned off, the cables are connected to the ports of each devices, and then both are turned on.
Not really but it does have 2 ports.
Devices- 6 W= n(n-1)/2 whereby W is number of cables n is number of devices solution W= 6(6-1)/2 =6(5)/2 =3(5) =15 15 cables
The Mac Pro has two Ethernet ports so that two Ethernet cables can be connected to the computer. The cables may be connecting a local network or peripheral devices such as printers or cameras that require an Ethernet connection.