# haimgel/display-switch

Turn a $30 USB switch into a full-featured multi-monitor KVM switch

Repository: https://github.com/haimgel/display-switch
Canonical: https://ross.abutalabs.com/products/display-switch
Homepage: https://haim.dev/posts/2020-07-28-dual-monitor-kvm/
Language: Rust
License: MIT
License Family: permissive
Topics: ddc, switches-monitors, monitor-configuration, macos, windows, rust-lang
Last push: 2026-08-01T21:35:58+00:00

## Health v2 (maintenance only)
Score: 69/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 95, release rhythm 18, longevity 100
- inputs: {"age_days": 2227, "days_push": 32, "days_rel": 339, "gap_med": 320, "n_releases_24m": 2}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 3426, forks 129 (observed 2026-08-28T04:08:03.934462+00:00)

## What it is
A Rust utility that watches USB device connect/disconnect events and switches monitor inputs via DDC/CI, turning a cheap USB switch into a full multi-monitor KVM solution. It runs on all connected computers so monitor inputs switch automatically in both directions.

## Use cases
- turn a cheap USB switch into a multi-monitor KVM
- automatically switch monitor inputs when switching computers
- build a 4K60 dual-monitor KVM without expensive hardware
- switch all monitors to a different input with one button press
- control monitor input source via DDC/CI from the desktop

## When to choose
- you share monitors, keyboard, and mouse between two or more computers
- you want KVM functionality without buying an expensive 4K-capable KVM switch
- you need per-monitor input switching configurations

## When to avoid
- your monitors do not support DDC/CI input switching
- you need a single-box hardware KVM with no per-computer software installation
- you need USB-C video switching handled in hardware

## Facets
- artifact type: application
- maturity: active
- function: developer-tools, configuration-management
- domain: developer-tools, hardware, cross-platform
- platform: windows, rust
- tags: ddc-ci, kvm-switch, monitor-input, usb-switch, multi-monitor, macos, linux

## Member repositories
- haimgel/display-switch (main) score 69

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:08:03.934462+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T18:37:52.958071+00:00, confidence not recorded.
  - readme: https://github.com/haimgel/display-switch (fetched 2026-08-28T04:08:03.934462+00:00, sha d4278e1e6378)
  - homepage: https://haim.dev/posts/2020-07-28-dual-monitor-kvm/ (fetched 2026-08-29T09:32:05.002346+00:00, sha c5b7e69cadb3)
  - site_page: https://haim.dev/about (fetched 2026-08-29T09:32:05.011975+00:00, sha afc64fa3174e)
- Data as of 2026-08-30T08:39:29.467469+00:00.