Nowadays, a USB cable connection is commonly used.
RJ45 female and males.
Switches, hubs...
A "Type A" connector.
20- pin connector
7-pin connector
At the very minimum each device must have a NIC adaptor to connect to the network. There also must be some type of media (either cable or wireless), and usually a connectivity device, such as hubs, switches, routers, etc.
Ethernet is not a device, it is software protocol. There is hardware to implement the protocol, e.g. NICs, switches, hubs, etc.
Use the trading connector
An ethernet cable. Or wireless adapters.
bus
bus
The "F" connector is the most common type that is used on RG6 cable. This is the universal connector for home use of RG6 with antennas, CATV, satellite, and consumer electronics.