Cant connect my djm 2000 to rekordbox

Problem with rekordbox

Hello, for some reason i cant find my Djm 2000 as an option in the audio settings. Ive connected my two Cdj 2000:s to the Djm 2000 and then the Djm 2000 to my computer. My computer dosent have a lan output so i im using a lan to usb. 

Can someone please tell me whats wrong, thank you!