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+# Keychron K3 HE — Hardware Design Files
+
+> Ultra-slim 75% wireless magnetic switch keyboard with low-profile Hall Effect switches, rapid trigger support, and tri-mode connectivity.
+
+**Product page:** [Keychron K3 HE](https://www.keychron.com/products/keychron-k3-he-wireless-magnetic-switch-custom-keyboard)
+
+![Keychron K3 HE](https://www.keychron.com/cdn/shop/files/Keychron-K3-HE-Features.jpg?crop=center&height=1200&v=1774250330&width=1200)
+
+## Specifications
+
+| Spec | Detail |
+|---|---|
+| Layout | 75% compact slim |
+| Versions | Fully Assembled / Fully Assembled ISO |
+| Body Material | Aluminum + Wood |
+| Bottom Case Material | ABS Plastic |
+| Switch Type | Keychron Ultra-Fast Lime Low-Profile Magnetic Switch |
+| Keycap | LSA double-shot PBT low-profile keycaps |
+| Connectivity | Bluetooth 5.2 / 2.4 GHz / USB-C |
+| Polling Rate | 1000 Hz (wired and 2.4 GHz) / 125 Hz (Bluetooth) |
+| Adjustable Actuation | 0.2-2.9 mm |
+| Rapid Trigger | Yes |
+| Firmware | QMK / Keychron Launcher |
+
+## Included Files
+
+| File | Description |
+|---|---|
+| `K3_HE_LSA_Special_Edition_US_Full-Model-20260709.stp` | Complete assembled Special Edition US full model with LSA keycaps |
+| `K3_HE_US_Special_Edition_Aluminum_Plate-20250926.dwg` | Special Edition US aluminum plate drawing |
+| `K3_HE_US_Special_Edition_Aluminum_Plate-20250926.pdf` | Special Edition US aluminum plate reference sheet |
+| `K3_HE_US_Special_Edition_Bottom_Case-20260709.stp` | Special Edition US bottom case model |
+| `K3_HE_US_Special_Edition_PCB-20251023.dwg` | Special Edition US PCB drawing |
+
+
+## Downloads
+
+> **Download note:** If a download link does not respond, copy the link and paste it directly into your browser's address bar. All links below are hosted on Keychron's official server and are safe to use.
+
+| File | Download Link |
+|---|---|
+| `K3_HE_LSA_Special_Edition_US_Full-Model-20260709.stp` | http://www.keychron.co:34568/keychron-github-assets/Keychron-Keyboards-Hardware-Design/K-HE-Series/K3%20HE/K3_HE_LSA_Special_Edition_US_Full-Model-20260709.stp |
+| `K3_HE_US_Special_Edition_Aluminum_Plate-20250926.dwg` | http://www.keychron.co:34568/keychron-github-assets/Keychron-Keyboards-Hardware-Design/K-HE-Series/K3%20HE/K3_HE_US_Special_Edition_Aluminum_Plate-20250926.dwg |
+| `K3_HE_US_Special_Edition_Aluminum_Plate-20250926.pdf` | http://www.keychron.co:34568/keychron-github-assets/Keychron-Keyboards-Hardware-Design/K-HE-Series/K3%20HE/K3_HE_US_Special_Edition_Aluminum_Plate-20250926.pdf |
+| `K3_HE_US_Special_Edition_Bottom_Case-20260709.stp` | http://www.keychron.co:34568/keychron-github-assets/Keychron-Keyboards-Hardware-Design/K-HE-Series/K3%20HE/K3_HE_US_Special_Edition_Bottom_Case-20260709.stp |
+| `K3_HE_US_Special_Edition_PCB-20251023.dwg` | http://www.keychron.co:34568/keychron-github-assets/Keychron-Keyboards-Hardware-Design/K-HE-Series/K3%20HE/K3_HE_US_Special_Edition_PCB-20251023.dwg |
+
+## Opening the Files
+
+| Format | Free Software | Commercial Software |
+|---|---|---|
+| `.stp` | FreeCAD, Onshape | Fusion 360, SolidWorks |
+| `.dwg` | LibreCAD (limited), QCAD | AutoCAD, DraftSight |
+| `.pdf` | Any PDF viewer | — |
+
+## Links
+
+- [Series Overview](../README.md)
+- [Main Repository](https://github.com/Keychron/Keychron-Keyboards-Hardware-Design)
+
+## License
+
+This project is **source-available**. Personal and educational use is allowed, and commercial use is allowed for original compatible accessories within the limits of the license.
+
+**You may not use these files to copy, manufacture, sell, or distribute Keychron keyboards or mice, or substantially similar products, and you may not use Keychron trademarks as your own branding.**
+
+See the [LICENSE](../../LICENSE) for full terms.