KVM switch Kindermann HDC-KSWB21HU — 21-port USB with HDMI for keyboard, video and mouse over HDMI

Kindermann HDC-KSWB21HU is a 21-port KVM switch that provides centralized control of up to 21 computers using a single USB keyboard, USB mouse and one HDMI monitor. The device supports switching of USB peripherals and HDMI video, enabling streamlined management of multiple systems in environments such as control rooms, server cabinets and multi‑PC workstations. By consolidating keyboard, video and mouse connections into one unit, the switch reduces cable clutter and saves workspace while allowing fast access to each connected computer.

Advantages

The KVM switch supports up to 21 computer connections with unified USB keyboard and mouse control and HDMI video switching, reducing the need for multiple sets of peripherals. It simplifies cable routing and minimizes the physical footprint required for multi‑system setups. The design enables quick switching between systems, improving operational efficiency in monitoring and administration tasks. Compatibility with standard USB input devices and HDMI displays allows integration with common office and server hardware.

Suitable for

• Control rooms and monitoring stations
• Server cabinets and data center racks
• Multi‑PC workstations in offices and studios
• IT maintenance and system administration desks
• Training rooms and demonstration setups

Key specifications

• Number of ports: 21 computer inputs
• Keyboard and mouse interface: USB
• Video interface: HDMI
• Peripheral support: USB devices via shared USB ports
• Intended use: centralized KVM control for multiple computers

How to use

Connect each computer to one of the 21 input ports using the appropriate HDMI and USB cables, then attach a single HDMI monitor, USB keyboard and USB mouse to the KVM switch console ports. Use the switch’s interface or selection controls to change the active computer; the connected USB peripherals and HDMI display will follow the selected input. Follow standard cabling practices to ensure stable HDMI signal and USB connectivity between the switch and each computer.

Usage recommendations

Place the KVM switch in a ventilated location within reach of the console peripherals and ensure HDMI and USB cables are of appropriate length and quality to maintain signal integrity. For rack or cabinet installations, plan cable routing to avoid sharp bends and electromagnetic interference. Verify compatibility of connected keyboards, mice and displays before deployment to ensure expected functionality.