Adder KMU2P – USB to PS/2 Keyboard Mouse Converter

Product Overview

The Adder KMU2P is a USB to PS/2 converter that adapts USB keyboard and mouse connections to traditional PS/2-style inputs for use with older PC systems and equipment. This keyboard mouse converter continuously emulates the presence of a keyboard and mouse via the PS/2 connectors, so a connected KVM switch or legacy computer always believes its console peripherals are attached. For AV and IT teams maintaining PS/2-era KVM switches, extenders, or industrial PCs, the KMU2P is the supported Adder path for using modern USB keyboards and mice with legacy PS/2 hardware.

Product Description

PS/2 peripherals are increasingly difficult to source, yet a large installed base of KVM switches, rack consoles, and industrial computers still expects PS/2 keyboard and mouse inputs. The KMU2P bridges that gap, accepting current USB keyboards and mice and presenting them to the host equipment as PS/2 devices.

Its defining behavior is constant emulation: the converter emulates the presence of a keyboard and mouse via the PS/2 connectors at all times, regardless of switching activity. The practical result, as Adder states, is that when the KMU2P is used with a KVM switch there is no delay in response when switching to that channel — the channel is ready for input the instant it is selected, with no re-enumeration pause and no risk of the host flagging a missing keyboard at boot. Adder lists the KMU2P for use across media and entertainment, control room, energy and utilities, transport, government and military, healthcare, and industrial applications — sectors where legacy equipment routinely outlives the peripherals originally specified for it. Adder also publishes firmware for the converter (currently v2.04), reflecting its active, intelligent design rather than a simple passive pin adapter. If you are refreshing consoles around legacy switching gear, pair the KMU2P with peripherals and cabling from the Adder Technology collection at Creation Networks.

Key Features

• USB to PS/2 Adaptation — Connects modern USB keyboard and mouse to traditional PS/2-style inputs on older PC systems and equipment.
• Continuous Keyboard/Mouse Emulation — Emulates the presence of a keyboard and mouse via the PS/2 connectors at all times.
• Zero Switching Delay — When used with a KVM switch, there is no delay in response when switching to the KMU2P channel.
• Legacy Equipment Lifeline — Keeps PS/2-based KVM switches, consoles, and industrial PCs usable as PS/2 peripherals disappear from the market.
• Field-Updatable Firmware — Adder publishes firmware updates for the KMU2P (current release v2.04) to maintain device compatibility.
• Cross-Industry Use — Listed by Adder for media and entertainment, control room, energy, transport, government and military, healthcare, and industrial applications.

Technical Specifications