The American DJ D4 Branch RM is a single rack space, 4-way distributor/booster with 3-pin and 5-pin XLR input and output jacks. This unit takes the incoming DMX signal and splits it to four separate outputs that are electronically isolated from each other to ensure uninterrupted data. In addition, each output has dedicated drivers to boost the incoming signal. The unit also includes a link / terminate button for easy troubleshooting.