ATEN CS19216 16-Port USB 3.0 4K DisplayPort KVM Switch
Overview
The CS19216 is a rack-mount 16-port KVM switch from the ATEN KVM lineup designed for data centers and server rooms that need centralized keyboard, video, and mouse control across a high-density system count. It handles DisplayPort at 4096 x 2160 @ 60Hz — true 4K/UHD — eliminating the resolution compromises common on legacy KVMs when operators work with modern 4K displays. Port selection is available via OSD, hotkey, pushbutton, or RS-232 commands, giving operators and remote management scripts flexible access methods without requiring physical access to each connected system. Two front-panel USB 3.1 Gen 1 Type-A ports (5 Gbps) serve as a shared hub, letting operators connect peripherals such as storage drives or input devices at the console without running separate USB drops to each server. Cascade the CS19216 with compatible KVM switches to scale control up to 256 systems from a single console — a practical path for facilities that need to add capacity without replacing existing infrastructure. Firmware v1.2.111 (released 2026-01-21) is the current production release; a dedicated slide switch provides a hardware-level firmware recovery path if an upgrade fails, preventing a bricked unit from taking the console offline.
Compatibility
The CS19216 supports USB keyboard and mouse peripherals and outputs to both DisplayPort and HDMI displays at 4096 x 2160 @ 60Hz — confirm your display and source systems support 4K DisplayPort or HDMI before deployment, as the switch does not downscale for lower-resolution targets. Cascade connections to compatible ATEN multi-port KVM switches to reach the 256-system maximum; consult ATEN's cascade compatibility matrix for supported models before specifying a tiered installation. RS-232 command control integrates with serial management systems common in NOC and broadcast environments.
Installation Notes
Rack-mount chassis — verify rack unit height against your available bay space before ordering. Operating humidity must remain below 80% RH non-condensing; standard server room HVAC is sufficient but skip deployment in uncontrolled environments such as unventilated equipment closets. Autoscan interval is configurable from 0 to 255 seconds (default 5 seconds), adjustable via OSD or hotkey to match your monitoring workflow. Use the onboard slide switch for firmware recovery if a firmware update via the standard path does not complete successfully.
