DisplayPort KVM Switch 4 PC 1 Monitor, 4K@60Hz KVM switches with EDID Emulator, Supports auto-scan Function, 480Mbps USB, DP KVM Switch with 4 x 5ft KVM Cables and DP Cables

The product is a KVM switch that uses an external DC power adapter. It does not contain any type of battery (including button batteries).
4K@60Hz KVM Switch 2 PC 1 MonitorA perfect solution for desktop workstations that increases productivity, saves space, and saves money. It allows for quick and easy switching between four 4K-capable computers using a single USB keyboard, USB mouse, and DisplayPort video console for greater efficiency and management. Common scenarios include: home offices, gaming, small businesses, server rooms, data centers, control rooms, etc.