Serato DJ 1.9.2 is supported on OS X El Capitan. You can download the latest version of Serato DJ here.
Although Serato software is supported, hardware support for OS X El Capitan is manufacturer specific and some hardware will require the driver to be updated. Please make sure you are running the latest driver and firmware (if available) for your specific hardware.
Drivers and firmware can be found via the Drivers & Firmware article.
If you are still experiencing issues with Serato DJ and your supported device please contact the Serato Support team or contact your hardware manufacturer for more information.
Unsupported Serato DJ Hardware
From our tests (or through our partners) we have found the following devices are problematic while running on OS X 10.11 El Capitan and/or do not yet have El Capitan drivers available:
Reloop Terminal Mix 2
Reloop Terminal Mix 4
Reloop Terminal Mix 8