Just use a live network device to tone. Laptop on one end and just a switch or something sitting on the other. Plug in and look for link light.
As for putting in a switch, assuming 3 of those ports are currently live, you should be able to put it in and just patch them directly to the switch. Then it is just a matter of punching in the other 2.
If 3 of those ports are not connected, and this is way I assume, then the 2 sides of the device are not connected and you will need to punch in cables in what looks likeThe 6 sets of 8 surrounding the jacks.
Bottom line, find the manual and then RTFM.
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