The Numark DJ|iO is a portable 24-bit USB audio interface designed for DJs who need a reliable output system for laptop-based performances. While the original device is discontinued, Numark continues to provide legacy driver support for various operating systems. Official Download Links by Operating System
Some DJs install Windows 7 inside VirtualBox or VMware on their modern PC, pass the USB DJ IO through to the VM, and run their old DJ software there. This is complex but works if you must keep the DJ IO alive. numark dj io asio driver download
These often contain malware or outdated beta drivers. The Numark DJ|iO is a portable 24-bit USB