
You need usb "A" type Male (The flat one which goes into your computer) and the other end goes into your cdj usb "B" Type , DO NOT get a USB3.0 "B" type as it's not backwards compatible to USB 1 and 2.
Stick the A male side into your computer and the B side in the back of your CDJ.
Do the same for the second CDJ , then come back for the mappings and on.
The DJM is not to be used to control the software but as a hardware mixer.