The Pioneer DDJ-400 is a DJ gear that offers a seamless mixing experience for music enthusiasts. With two scratcher platters and a two-channel mixer section, this device allows users to create dynamic and engaging mixes. The built-in optical drive is absent from this model, making it a sleek and compact option.

The Pioneer DDJ-400 is compatible with Mac operating systems, including Mac OS X 10.11 El Capitan, Mac OS X 10.12 Sierra, Mac OS X 10.13 High Sierra, and Mac OS X 10.14 Mojave. Additionally, it supports popular Windows operating systems such as Windows 10, Windows 7, and Windows 8.1. This wide compatibility ensures that users can seamlessly integrate the device into their preferred operating system. 

Included in the package is a USB cable, which allows for easy connectivity to computers or other devices. The presence of a quick start guide assists users in setting up the device efficiently. 

Measuring 482 millimeters in width, 272.4 millimeters in depth, and 58.5 millimeters in height, this DJ gear offers a compact and portable solution. Weighing 2100 grams, it is lightweight and convenient for transportation. 

In summary, the Pioneer DDJ-400 is a versatile DJ gear that provides an immersive mixing experience. Its compatibility with both Mac and Windows operating systems, along with the inclusion of a USB cable and quick start guide, makes it a user-friendly option. With its compact dimensions and durable construction, this device is ideal for DJs on the go.