HDK403-P23-EUBK
HDMI 2.0 & DP 1.2 Triple Monitor KVM-Switch 4K60Hz with USB 3.0 HUB, HEADSET, Audio & microphone
- Regular price
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€644,60 - Regular price
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€644,60 - Sale price
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€644,60
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Overview & Highlights
Optimized HDMI and DP signals for seamless multi-screen control. That's why TESmart shines in 4x3 triple monitor KVM solutions.
True triple display support, powered by advanced chip technology, reliable built-in EDID management, 99% monitor compatibility and zero signal interruption for extended or mirrored displays. Easily manage up to 4 computers across 3 monitors with a single keyboard and mouse configuration.
Related products:
HKS203-P23: The sibling product Triple 4K60 for 2 PCs (HDMI 2.0) & 3 monitors (HDMI 2.0).
DKS203-M24: The sibling product Triple 8K60 for 2 PCs (DP 1.4) & 3 monitors (DP 1.4).
For Triple 4K/60Hz Workstations:
Effortlessly switch inputs with a single button, designed for professional multimedia workstations.
For 4 PC management:
Easily switch between up to four computers with a single keyboard and mouse configuration, increasing productivity and simplifying multi-PC control.
About this product:
Scope of delivery
- 1 * 4x3 HDMI+DP Three-Monitor KVM Switch
- 4 * KVM cables (HDMI+USB)
- 8 * DP cables
- 1 * IR remote control
- 1 * DC-12V power supply
- 1 * User manual
- 2 * Rack panels
Downloads & User manual
Our shipping policy consists of the following 7 sections:
Order processing time (shipping lead time)
- Shipping costs & Delivery time
- Order tracking
- Delayed shipments
- Order cancellations
- Steer & Customs duties
- Contact us
1. Order processing time
The order processing time refers to the period from the time of the order until the order is handed over to the shipping service provider.
• Orders are usually shipped within 1-2 working days after confirmation/payment.
• Orders placed on weekends may be subject to delays.
• Our warehouse operates Monday to Friday during regular business hours (excluding public holidays). In such cases, we will make every effort to minimize shipping delays.
We have warehouses in Germany and other regions. Your order will be shipped directly from the nearest warehouse, depending on your delivery address. If the nearest warehouse does not have the product in stock, we will ship your order from another nearby warehouse to ensure you receive it as quickly as possible.
Shipping to the United Kingdom 🇬🇧
To ensure smooth delivery and correct customs clearance, orders from the United Kingdom are processed through our US shop.
Orders to UK addresses cannot be shipped via our EU shop.
2. Shipping costs & Delivery time
| Country or region | Estimated delivery time | Shipping costs | Logistics service provider |
| Germany | 3 working days | Free Shipping | DHL |
| Other EU countries | 3-7 working days | Free Shipping | DHL/DPD |
| Non-EU countries | 5-12 working days | From 60 euros | UPS |
3. Order tracking
4.Delayed shipments
5. Order Cancellation
6. Taxes & Customs duties
7. Contact us
- TESmart orders are processed automatically. Once shipped, they cannot be canceled or changed, including address changes.
- If you wish to return or request a refund, please contact us within 30 days of receiving the product at service@tesmart.de.
- Returns are only possible if the product is unused, complete and in its original packaging.
- For returns not due to quality issues, the customer bears the return shipping costs.
- TESmart will cover the return shipping costs for returns or refunds due to quality issues.
- Products that are searched for 30 days and within 2 years Items exhibiting problems cannot be returned, but depending on inspection, they can be repaired or replaced (same model only, replacements preferred for members).
- Between the 2nd and 3rd. No return or refund service is offered this year. Members can after 3 months A discount of [amount] will be granted from the date of purchase as part of the trade-in policy. up to 50% You will receive a refund of the original product price towards the purchase of a new product. For detailed terms and conditions, please visit: https://tesmart.de/pages/tesmart-id-trade-in
- Refunds will be processed within 5 working days of the goods being received at the warehouse.
For questions: service@tesmart.de
Full guidelines:
Technical data
| Produkattribute | |
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Modell (SKU) |
HDK403-P23-EUBK
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Kompatibles Setup |
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Max Resolution |
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Supported Resolutions |
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VRR (Variable Bildwiederholfrequenz) |
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MST (Multi-Stream Transport) |
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Laptop-Aufladung |
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Netzwerkanschluss |
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Independent Audio Focus Switching |
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Independent Audio Focus Locking |
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Thunderbolt 4 Ports |
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EDID Emulation |
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Umschaltmethoden |
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Belegbare Hotkeys |
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Legacy-Emulationsmodus |
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Input Ports |
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Output Ports |
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Docking Ports |
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Anzeigemodi |
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Handbuch (PDF) |
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From 4K to 240Hz – It just works
Three displays, more flexible modes
EDID Emulation – Stable screens, no surprises
Built-in shared docking station
One switch, endless possibilities. Whether for gaming, content creation, or multi-window workflows – our KVM effortlessly handles a wide range of resolutions and refresh rates.
Each KVM output supports up to:
• 3840×2160 (4K UHD) — 60Hz
• 3440×1440 (21:9 Ultra-Wide) — 100 Hz
• 3840×1080 (32:9 Ultra Wide) — 120 Hz
• 2560×1440 (QHD) — 120Hz
• 2560×1080 (21:9 Ultra-Wide) — 165 Hz
• 1920×1080 (FHD) — 240Hz
• Mode 1: One PC on all 3 monitors (Extend or Mirror)
Use a single PC to drive all three monitors. Ideal for multi-window workflows such as video editing, financial dashboards, or immersive simulations. Mirror or extend the display via your system settings.
• Mode 2: Display any 3 out of 4 PCs simultaneously on 3 monitors
Assign a different PC to each monitor. For example, point PC1 to monitor A, PC2 to monitor B, and PC4 to monitor C – any combination is possible. Perfect for developers, cybersecurity labs, or monitoring multiple systems.
Switching between displays shouldn't mess up your desktop. Our integrated EDID emulator ensures your layout stays exactly as you left it.
• No more misplaced symbols
Retains the position of desktop icons and the size of open windows when switching inputs.
• Flicker-free switching
Prevents screen dropouts and flickering caused by re-initializing the display.
• Smoother multitasking
Maintains visual consistency between workstations and monitor setups.
✅ With TESmart EDID emulation: Your display remains stable and unchanged – even after switching channels.
⚠️ Without EDID emulation: icons move, window sizes change, and the screen flickers after each change.
Streamline your setup with a built-in docking station that keeps everything connected — no extra hubs required.
• USB 3.0 (5Gbps) — High-speed data for drives and peripherals
• Gigabit Ethernet (1000Mbps) — Stable, wired internet for all devices
• 3.5mm Headset Jack — Unified audio input/output for meetings and calls
A cleaner, more efficient workspace — ideal for work-from-home or shared desk environments.
Easy switching – 4 ways to choose from
Independent USB & audio focus lock
Prevent accidental entries – even by your cat
Dedicated K&M-Ports with dual-mode support
Switching shouldn't slow you down – we offer four seamless methods to suit every setup and habit:
• Hotkey switching – Fixed key combinations for quick source switching
• Front button operation – Direct access, anytime and easily
• IR remote control – Convenient control from your desk
• Mouse wheel toggle – Double tap, toggle instantly
Whether at work, gaming, or giving presentations – choose the method that suits your workflow.
Switch displays without interrupting your USB devices or audio connection.
This KVM allows you to independently lock the focus of USB 3.0 and L/R audio – so that headsets, webcams or external drives remain connected to the current PC, even during screen switching.
Highlights:
• Lock USB and audio focus separately
• Avoid interruptions to calls or devices
• Lock status remains even after restarting
✅ Ideal for meetings, streaming and multitasking
⚠️ USB focus ≠ keyboard & Mouse focus – they are switched separately.
Prevent unwanted input during meetings, presentations, or breaks. With just one keystroke, you can lock the video output, audio, and all control interfaces.
• One-touch lock
If the display freezes, USB, audio, keyboard shortcuts and IR control are disabled.
• PIN unlocking
Continue your session exactly where you left off – with your individual password.
• Reassuring security
Prevents accidental switching – ideal for households with children or pets.
✅ Key combinations and remote controls are disabled when the device is locked.
⚠️ To unlock, press the lock button again and enter your PIN.
To improve keyboard and mouse compatibility – especially when switching hotkeys – we have developed two special connection modes:
• Pass-through mode (recommended)
Direct routing to the PC. Supports advanced drivers, macros, high-DPI mice, and multifunctional input devices. Ideal for gaming, design, and professional workflows.
• Legacy emulation mode
Ensures universal compatibility and stable hotkey functionality on most systems. Best suited for office use or when experiencing driver issues.
✅ Hotkey commands only work if your keyboard is connected to the dedicated K&M-Port is connected.
⚠️ In emulation mode, driver-based software and advanced features are disabled.
⚠️ Bluetooth keyboards and mice are not supported.
⚠️ Legacy emulation mode is available via firmware update (Prime-23 series).
FAQs
Why can't my computer use Wi-Fi after connecting to the KVM switch?
The KVM switch has an integrated network card that is enabled by default. Computers may prioritize the wired connection. If you want to use Wi-Fi instead of the KVM's wired connection, you can: Disable the KVM's integrated network card: Press [Right Ctrl] → [Right Ctrl] → [F4] to turn off the integrated network card. Note: A buzzer will sound twice when enabling and once when disabling. Disable the USB network adapter in computer settings (example: Windows 11): Method 1: Advanced network settings - Press [Win + I] to open Windows Settings. Go to Network. & Internet → Advanced network settings. In the list, find the adapter named Realtek USB GbE Family Controller. Click Disable. Method 2: Device Manager - Press [Win + X] and select Device Manager. Expand Network adapters and locate Realtek USB GbE Family Controller. Right-click and select Disable device.
How can I use the keyboard and mouse between different computers?
In Display Mode 2 (i.e., when three monitors display different computer screens), the keyboard/mouse focus can be switched independently to control different computers. The KVM switch's LCD displays the current status in real time: The leftmost number indicates which computer the keyboard/mouse focus is currently on (e.g., "1" for PC1, "2" for PC2). Hotkey switching: Press [Right Alt] → [Right Alt] to switch the keyboard/mouse focus between different computers. Tip: Switching the keyboard/mouse focus does not affect the video display; the video layout remains configured as in Display Mode 2.
Can switching cause the host computer's resolution to reset or Windows to rearrange the windows?
No. The HDK403-P23 has an EDID emulator that prevents loss of resolution or refresh rate and avoids the reorganization of windows when switching between computers.
Does this KVM support my 4K@144Hz- oder 8K monitor?
No. The HDK403-P23 supports HDMI 2.0 with a maximum resolution of 4K (2160p)@60Hz and is backward compatible with 2K (1440p)@60Hz/120Hz.
Does the KVM support both Mac and Windows environments?
Yes. The HDK403-P23 is compatible with a wide range of operating systems, including Windows, macOS, Unix, and Linux-based systems such as Debian, Ubuntu, Fedora, and Raspbian (including support for Raspberry Pi). It works in mixed operating system environments without additional configuration.
Why are my USB peripherals not working?
Connection requirements: The KVM switch uses the USB-B ports of PC1/2/3/4 for data transfer. Ensure that the computers' USB 3.0 ports are securely connected to the corresponding USB-B ports on the KVM switch. Port restrictions: USB ports with keyboard/mouse symbols are reserved exclusively for those devices. Bandwidth limitations: The KVM switch functions as a USB hub. Power supply issues: Connect high-power USB devices directly to your PC whenever possible, or use a powered USB hub. USB hub cascading limitations: The USB architecture supports a maximum of 7 cascading levels. Recommended solutions: Avoid docking stations and minimize cascading.
Why is my audio device not working?
Connection requirements: The KVM switch's audio functionality relies on the USB-B ports of PC1/2/3/4. Ensure all computers are securely connected to the corresponding USB-B ports on the KVM switch. Computer sound settings: For a 3.5 mm jack connection, select 'USB Audio' as the default output device in your computer's sound settings. For a USB 3.0 connection, select the corresponding USB audio output. If no sound is output via the 3.5 mm jack even after correct configuration, we recommend using a USB sound card (USB-to-3.5 mm adapter).
Why are my keyboard and mouse not working properly?
Common symptoms: Keyboard input is unresponsive or delayed; keystrokes are stuck or double-registered; mouse movements are jerky or laggy; keyboard shortcuts (hotkeys) do not work. Recommended solutions: Try switching to Legacy Emulation Mode to improve compatibility with a wider range of keyboards and mice: Press [Right Ctrl] + [Right Ctrl] + [F2]. If the problem persists, please contact our technical support team at support@tesmart.com.
Further questions?
If you have further questions that are not answered in this FAQ, please contact our technical support team at support@tesmart.com. Wir We are here to help you!
Does the KVM switch support firmware updates?
Yes, TESmart KVM switches support official firmware updates designed to fix common issues and improve compatibility. Important note: Firmware updates carry inherent risks. Installing the wrong version or performing the process incorrectly can cause device malfunctions. Therefore, it is strongly advised against performing a firmware update yourself if your device is working normally. If an update is necessary, please contact our technical support team for: the correct firmware version for your specific model, step-by-step update instructions, and technical support throughout the entire process.
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recycling & trade-in
Up to 50% credit for recycling
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Free Shipping
DE: 3 working days · EU: 3–7 working days
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30 days free returns
Hassle-free returns & Purchase guarantee
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Extended warranty: 2+1 years
Register and receive an additional year of warranty
