My ISP had installed an outdoor antenna from where a white RJ45 cable runs into a little white box (which is plugged into AC outlet) and from the same white box i do have another RJ45 jack plugged into my laptops NIC card. I came to know that the white ethernet cable is Power over Ethernet cable which carries the power as well as data. I just want to know if i can plug that ethernet directly into my laptops NIC card ? Can i do that will there be any harm to my laptop's NIC ??
Power Over Ethernet Laptop
if you plug the cable from the antenna into your computer nothing will happen, or work. that white box puts power into the Ethernet jack going to the antenna, powering the antenna up.
As far as I know you don't want to use powered ethernet in something that already has power to it like your NIC card. It's good for powered antennas that remain outside.
Hi lets clear up a few points the 56k modem port is dial up. its ideal if you have only a phone line to connect to the internet. its maximum down load data rate is 56k/bits a second, but is actually only capable of 7k bytes a second maximum or 7 kilo characters a second. RJ 11 is the connector a 4 element connection. RJ 45 is an ethernet cable with 8 elements when connected to a home hub or ADSL modem depending on the service supplied can be anything you pay for it can be as slow as the 56k and it can be 48g/bits/sec which would cost about 200 thousand dollars a year. Now a myth that needs to be explained wifi is going to be slower than the direct ethernet connection as it needs translation in to wireless from the ethernet connection. Most laptops of the type describe have an ethernet socket. the 56k dial up connection is still good should the ADSL connection fail provided you can still use the telephone to call someone. Be warned you only get what you pay for a cheap ADSL will only give a small down load data rate at the busiest time of day probably no faster than the dial up connection.
It sounds like your ISP is using an Axcelera (I don't remember the exact spelling) radio. The ac power powers the radio over the cable going to the antenna, but that power is separated from the cable going to your computer. It is completely safe.
