My Printer ( Brother MFC-J880DW ) is Attached Via Cat 5 with the TL-SG105-M2 and it was working perfectly with the Old Switch TP-Link 10/100/1000.

Now with the new TL-SG105-M2 installed , it Says Offline and won't print.

I have the Input Cable at the right End of the TL-SG105-M2 and the Printer in One of the other sockets.

To Prove that the Problem is with the TL-SG105-M2, I Replaced the TL-SG105-M2 with the Old 10/100/1000 and it Works.

Any Help would be appreciated