Maintain control of legacy PS/2 systems when the host expects a keyboard and mouse at every stage of startup. The Black Box AC247A PS/2 Keyboard and Mouse Ghost Emulator with Pass Thru Connection presents the signals a server needs to stay accessible through reboot, POST, and low-level maintenance tasks. Built for environments that still depend on PS/2 infrastructure, this accessory helps prevent the common failure mode where a machine drops out of remote management because no local input device is detected. The pass-thru design supports practical deployment alongside existing KVM workflows, making it easier to preserve access without reworking the rack. For teams supporting mixed-generation hardware, the AC247A adds a small but important layer of operational certainty. It is the kind of component that earns its place in spares kits, remote hands workflows, and legacy server closets where uptime depends on keeping every system visible to management tools.