A router or possibly a data switch can connect two PC's to a DSL or cable modem.
A switch is typically used to connect multiple computers in a single residential unit to a modem.
A switch or hub is used to connect multiple devices to a modem. Hubs have largely fallen out of use due to their bandwidth-sharing properties that make them undesirable in high-speed local networks.
You are supposed to connect an ethernet cable from the modem to whatever device that needs an online connection and if you have 2 or more items connect the router to the modem with an ethernet cable and then connect the devices to the router with ethernet cables
You can use a router, either wired (Ethernet) or wireless to connect two or more computers with a single cable modem. You would need either Category 5, 5e, or Category 6 Ethernet cables to do this. Also, you may set up a wireless Local Area Network (otherwise known as LAN) if your type of router supports that and your computer(s)/devices support it.
Modem is used to connect one or more devices. It is also used to connect internet.the full form of modem is modulator demodulator.
If you have a router the ethernet cable connects to it. If you have another item like a PC connected to a modem you could disconnect the ethernet cable from it and plug in the PS3 until you purchase a router.
if your talking about transmitting ouside of the computer to another or a server that is a few things for home its a networkadaptor inside the PC, and a modem. also to connect more than one to a modem you need a router. to connect many you need a large switch and a domain/server
You also need an Internet service provider (ISP) of either Broadband or DSL and a router if more than a single device is being connected with ethernet cables to the modem or a wireless router and/or modem for WiFi connection
First you must have an internet service provider and it then depends on what equipment they have provided. An ethernet cable will connect to a modem or a router and go to the device for a wired connection. I used a Cat 6 ethernet cable and a router to split the signal from my first cable modem to a router and then from my PS3 and PC connected 2 more ethernet cables to the back of the router. Later Comcast sent a gateway modem and that already had WiFi and more than one spot to plug in the ethernet cables and I put my router away
A modem is needed for internet and other commuinications. It is needed to connect to the isp, it sends and decode transmittions. For more information, see: http://en.wikipedia.org/wiki/Modem
Most companies and homes connect to the internet through a modem typically this comes with just one IP address. Routers however allow you to form your own network and connect it to the modem. This allows you to create a set of IP addresses unique to your computers and connect more than one computer through the router and modem.
An 'adapter' is a general term for anything which changes, converts, or connects to devices. For example, if you have a wall plug that has the two thin connectors (A 2-prong, as it's called) and cable that is a 3-prong, then you'd need an 'adapter' to make it fit. Adapters can change a wide variety of things, and in technology, there may be limitations to what. We'll need more info to be more specific. As for a router: A router, in computer networking, is a device which allows you to connect multiple devices to a single internet connection, such as a modem. Routers act as a 'front man', so your modem (or other device) doesn't know the router has other devices or computers behind it. This is important because Cable companies typically DO NOT allow multiple computers on a single modem, unless the modem has more than one place to plug in. If you use a switch or hub, instead of a router, the connection may not work The way a router works is that it takes a request from a computer, then sends the request to the modem as if the router, itself, was asking for the request instead of the computer. Then when the data is received, it passes it along to the computer. Routers are useful because they CAN provide better security and a more reliable connection than switches and hubs. TLDR Version: Routers work like a manager, they let more than one computer use a single modem (or similar device) and prevent them from messing with each other.