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Our teacher gave us 4 PC's at school . I want to setup a LAN connection between them all for file sharing via Ethernet cables, and no internet access is available or needed. I have successfully connected the first two with a simple cross-over cable, but I am lost on how to connect all 4. Because I won't use internet, I assumed that I won't need a modem either, am I wrong?

1. Should I use a modem/router?
2. How do I? Without internet, that is.

EDIT:

So according to what Paul said, I should just plug in the Ethernet into the hub/router, but all the computers tell me that the cable is not connected, while on the hub I see that it has not detected the computer either.

In short, the devices are only detecting the cables.

Note: Each PC has one NIC

Our teacher gave us 4 PC's at school . I want to setup a LAN connection between them all for file sharing via Ethernet cables, and no internet access is available or needed. I have successfully connected the first two with a simple cross-over cable, but I am lost on how to connect all 4. Because I won't use internet, I assumed that I won't need a modem either, am I wrong?

1. Should I use a modem/router?
2. How do I? Without internet, that is.

EDIT:

So according to what Paul said, I should just plug in the Ethernet into the hub/router, but all the computers tell me that the cable is not connected, while on the hub I see that it has not detected the computer either.

In short, the devices are only detecting the cables.

Note: Each PC has one NIC

EDIT 2

The router is on, but shows no response at all. But I think it is wrong setup. I just connected to power, but someone told me that I need a telephone cable into the wall even if no internet is needed.

Our teacher gave us 4 PC's at school . I want to setup a LAN connection between them all for file sharing via Ethernet cables, and no internet access is available or needed. I have successfully connected the first two with a simple cross-over cable, but I am lost on how to connect all 4. Because I won't use internet, I assumed that I won't need a modem either, am I wrong?

1. Should I use a modem/router?
2. How do I? Without internet, that is.

EDIT:

So according to what Paul said, I should just plug in the Ethernet into the hub/router, but all the computers tell me that the cable is not connected, while on the hub I see that it has not detected the computer either.

In short, the devices are only detecting the cables.

Our teacher gave us 4 PC's at school . I want to setup a LAN connection between them all for file sharing via Ethernet cables, and no internet access is available or needed. I have successfully connected the first two with a simple cross-over cable, but I am lost on how to connect all 4. Because I won't use internet, I assumed that I won't need a modem either, am I wrong?

1. Should I use a modem/router?
2. How do I? Without internet, that is.

EDIT:

So according to what Paul said, I should just plug in the Ethernet into the hub/router, but all the computers tell me that the cable is not connected, while on the hub I see that it has not detected the computer either.

In short, the devices are only detecting the cables.

Note: Each PC has one NIC

Our teacher gave us 4 PC's at school . I want to setup a LAN connection between them all for file sharing via Ethernet cables, and no internet access is available or needed. I have successfully connected the first two with a simple cross-over cable, but I am lost on how to connect all 4. Because I won't use internet, I assumed that I won't need a modem either, am I wrong?

1. Should I use a modem/router?
2. How do I? Without internet, that is.

Our teacher gave us 4 PC's at school . I want to setup a LAN connection between them all for file sharing via Ethernet cables, and no internet access is available or needed. I have successfully connected the first two with a simple cross-over cable, but I am lost on how to connect all 4. Because I won't use internet, I assumed that I won't need a modem either, am I wrong?

1. Should I use a modem/router?
2. How do I? Without internet, that is.

EDIT:

So according to what Paul said, I should just plug in the Ethernet into the hub/router, but all the computers tell me that the cable is not connected, while on the hub I see that it has not detected the computer either.

In short, the devices are only detecting the cables.