This ATEN USB HDMI Dual View KVM Extender uses HDBaseT 2.0 to send HDMI video, USB and (typically) audio over a single long-run cable, letting a computer be operated from a display and keyboard/mouse located well away from the actual PC — common in control rooms, digital signage installs, classrooms, and any setup where the machine needs to sit in a separate equipment room. "Dual View" indicates it drives two independent display outputs from one extender pair, while "4K@100m for Single View" specifies that a single 4K display can be run at the extender's maximum 100-metre HDBaseT reach (dual-display operation would typically max out at a shorter distance or lower resolution, though the listing doesn't spell that trade-off out explicitly). It's a professional AV/IT infrastructure product, not a consumer accessory.