How can LAN card be checked?

Answer:
It can be checked easily. You can just search someones LAN card as simple as 123 like some hackers can easily find it in a few seconds.

Addition: If you need a LAN card to be checked you need to run the manufacturers diagnostics utility. This can be done after determining that the card is not working on the network (for example, by pinging the address)
Contributor: Mathegenius
First answer by Mathegenius Chew Jian Yue. Last edit by Mathegenius Chew Jian Yue. Contributor trust: 12 [recommend contributor recommended]. Question popularity: 1 [recommend question].