HDK402-M24-CABK
HDMI 2.1 & DP 1.4 Dual 4K144Hz KVM Switch Gaming Dock for 4 PCs & 2 Monitors, w/ ADI Chip, EDID, VRR, FVA, ALLM, and Dynamic HDR
- Regular price
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$739.00 - Regular price
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$739.00 - Sale price
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$739.00
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Overview & Key Features
TESmart With You. Evolving For You!
The HDK402-M24 TESmart KVM supports HDMI 2.1, 8K@60Hz, with connections for 4 computers and 2 monitors. It features ADI chipset dual 8K60Hz resolution, built-in stable EDID emulator, offering 99% monitor compatibility with zero flickering, no black screen, or screen tearing. Ideal for designers, IT professionals, or gamers who need stability in multi-device setups.
Why You’ll Love It:
• Ultimate Display Performance: Supports 7680×4320@60Hz (DSC), 3840×2160@240Hz (DSC)
• Dual 8K/4K Editing: 12-bit color depth for accurate color reproduction
• Immersive Visuals: Dynamic HDR, VRR (G-Sync/FreeSync), FVA, and ALLM
• Full Hardware Compatibility: Nvidia/AMD graphics, plug-and-play
• Smart KVM Functions: Hotkeys, mouse wheel, front panel, infrared control
• Comprehensive Compatibility: Windows/macOS/Linux (including Raspberry Pi)
What's in the box
The HDMI 2.1 & DP 1.4 kvm switch kit comes with complete kvm-to-pcs cables (4 * KVM Cables & 4 * DP Cables) for a complete setup.
- 1 * 4x2 HDMI+DP Dual KVM Switch
- 4 * KVM Cables（HDMI+USB）
- 4 * DP 1.4 Cables
- 1 * IR Remote Control
- 1 * DC 12V Power Adapter
- 1 * User Manual
Downloads & Manual
| Country or Region | Estimated delivery time | Freight | postman |
| United States (excluding Alaska and Hawaii) | 3-5 working days | Free Shipping | UPS/USPS/ DHL/FedEx/DPD |
| Canada, U.K. | |||
| China (Macao SAR, Hong Kong SAR, Taiwan) | 3-5 working days | Starting at $30 | DHL/FedEx/UPS |
| Australia, New Zealand, Saudi Arabia, United Arab Emirates, Israel,Alaska, Hawaii | 5-12 working days | Starting at $60 | DHL/FedEx/UPS/USPS |
| Singapore, Malaysia, Philippines, Thailand | 5-12 working days | Starting at $30 | DHL/FedEx/UPS |
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Orders cannot be canceled or modified once placed due to automated processing.
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If a return is needed, contact service@tesmart.com within 30 days of delivery. Items must be in original condition with all packaging and accessories.
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Return shipping for non-quality issues is the customer’s responsibility.
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Products from third-party retailers
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Items damaged by misuse
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Order number, proof of purchase
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Photos/videos (if defective), full shipping address, and phone number
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Within 30 days: Refunds/returns accepted for both quality and non-quality issues
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30 days–1 year: No returns/refunds; repair or replacement may be offered
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1–3 years: No returns/refunds; replacement or Upgrade /trade-in at 30% discount after 4 months (members only)
The return and refund policy process overview is shown below. For the full policy, please refer to the Full Policy page below.
1.Order Cancellation & Modification
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To ensure timely delivery for every customer, TESmart’s order processing and shipping system is fully automated. Once shipped, the process is irreversible—orders cannot be canceled or modified, including address changes.
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Please kindly contact us within 30 days of delivery at service@tesmart.com, If you wish to return a product after receiving it, ensure the product and packaging are undamaged and in original condition.
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⚠️ Return shipping costs for non-quality issues are the responsibility of the customer. For more details, please kindly see below.
2.Return Process
2.1 Return Conditions:
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Products must be returned in original packaging, including all accessories, manuals, and documentation.
2.2 Items Not Eligible for Return:
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Products purchased from third-party retailers.
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Products damaged due to misuse or improper handling by the customer.
2.3 Return Request:
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Order number
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Proof of purchase
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Photos or videos of the defective product (to speed up processing)
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Full shipping address
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Contact phone number
2.4 Processing Time:
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Our support team will respond to your return request within 48 hours and provide the return warehouse address in your country/region.
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For certain countries/regions (e.g., the U.S., Germany, and the EU), we may provide a prepaid return label after confirming your address to expedite the return/refund process.
2.5 Return Address:
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Please send the product to the designated TESmart return warehouse.
2.6 Warehouse Inspection:
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Upon receipt, TESmart will inspect the returned item(s).
3. Refund Process
3.1 Refund Trigger:
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Once the returned product is received and inspected by our warehouse, the refund process will begin.
3.2 Refund Timeframe:
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Refunds will be processed within 5 business days after the return is received.
3.3 After-Sales Categories:
3.3.1 Within 30 days of delivery:
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The product is in its original packaging with all accessories.
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Return photos are provided before shipping.
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Non-quality issues: Return and refund supported within 30 days. Return shipping is the customer’s responsibility.
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Quality issues: Return and refund supported within 30 days. Return shipping is covered by TESmart.
3.3.2 From 30 days to 1 year after delivery (warranty period):
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Return/refund not supported. Please email service@tesmart.com to contact our after-sales support team.
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After evaluation by our technical team, we may offer product repair or replacement with the same model.
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To ensure timely service, we prioritize replacements.
3.3.3 From 1 to 3 years after purchase:
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Return/refund not supported.
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You may contact our after-sales support team for replacement of the same model.
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If you wish to upgrade to another product, after 4 months from purchase, members may Upgrade & Trade-in at a 30% discount off the original price.
4. After-Sales Support & Issue Resolution
4.1 Contact Information:
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For any questions or support requests, please contact TESmart Customer Service: 📧 service@tesmart.com
4.2 Delayed Refunds (if you haven’t received a refund after 5 business days):
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Check your bank account (ensure it is the one used for the purchase).
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Contact your card issuer (credit/debit card providers may experience processing delays).
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Contact your bank to confirm the transaction status.
Tech Specs
| Product Attribut | |
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Model (SKU) |
HDK402-M24-CABK
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Compatible Setup |
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Max Resolution |
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Supported Resolutions |
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VRR (Variable Refresh Rate) |
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MST (Multi-Stream Transport) |
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Laptop Charging |
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Network Port |
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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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Switching Methods |
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Assignable Hotkeys |
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Legacy Emulation Mode |
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Input Ports |
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Output Ports |
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Docking Ports |
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Display Modes |
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Manual (PDF) |
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Dual 8K60 Is Only as Good as Its Stability
From 8K to 240Hz — It Just Works
Dual 4K144 HDR VRR
Two Display Modes, Two Ways to Work
EDID Emulation — Stable Screens, No Surprises
Zero flicker. No resets. No black screens.
Powered by ADI 7674 decoding and advanced EDID emulation, this KVM ensures stable multi-monitor output even under high bandwidth loads.
Why it’s built different:
- ADI 7674: industry-grade HDMI 2.1 decoding
- Smart EDID: signal always-on, no display loss
- VRR / FVA / ALLM supported for smooth, tear-free gaming
- Ideal for high FPS gaming and critical creative workflows
Built for smooth gameplay, creative workflows, and ultra-clear visuals. With HDMI 2.1 and DSC, our KVM supports extreme resolutions and high refresh rates across a wide range of displays.
Each HDMI 2.1 output theoretically supports up to:
- 7680×4320 (8K UHD) — 60Hz (DSC)
- 5120×1440 (32:9 Ultra-Wide) — 120Hz (DSC)
- 3840×2160 (4K UHD) — 240Hz (DSC)
- 3440×1440 (21:9 Ultra-Wide) — 144Hz
- 2560×1440 (QHD) — 240Hz
- 1920×1080 (FHD) — 240Hz
Faster Switching. Stronger Signal. Smoother Frames.
- Fast Switching in 1–3 Seconds: No blackouts, no resets
- Signal Always-On: No disconnects during switch
- VRR / FVA / ALLM Supported: Tear-free, low-lag gaming
- Dual 4K@120Hz HDR (12bit): Stunning clarity and colors
- Up to 4K@144Hz / 165Hz via DSC:Built for fast-action games
Powered by ADI HDMI 2.1 decoding — boosts weak signals and ensures seamless multi-monitor stability
- Mode 1: One PC on Two Monitors (Extend or Mirror)
Extend your desktop across both monitors or mirror your display for presentations. Simply configure in your PC’s display settings — perfect for multitasking or dual-screen workflows. - Mode 2: Two PCs on Two Monitors
Display two computers side by side — one on each monitor. Use hotkeys to switch the KM focus between them. Ideal for hybrid setups (e.g. Mac + Windows), dev work, or live monitoring.
Switching displays shouldn’t scramble your desktop. Our built-in EDID emulator keeps your layout exactly how you left it.
- No More Icon Mess
Preserves icon positions and window sizes when switching inputs. - Flicker-Free Switching
Eliminates screen blackouts and flicker caused by display reinitialization. - Smoother Multitasking
Maintain visual consistency across workstations and monitor setups.
✅ With TESmart EDID emulation: your display stays stable and unchanged — even after switching.
⚠️ Without EDID emulation: icons shift, windows resize, and screen flicker occurs after every switch.
Built-in Shared Docking Station
Easy Switching, 4 Ways
Independent USB & Audio Focus Lock
Prevent Accidental Input – Even From Your Cat
Dedicated K&M Ports with Dual-Mode Support
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.
Switching shouldn’t slow you down — we offer four seamless methods to suit any setup or habit:
- Custom Hotkey Switching — Fast keyboard shortcuts for power users
- Front Panel Button — Simple, direct access anytime
- IR Remote — Stay in control from across the desk
- Mouse Wheel — Tap twice for instant switching
Whether you're working, gaming, or presenting — choose the way that works best for you.
Switch displays without interrupting your USB devices or audio.
This KVM lets you lock USB 3.0 and L/R audio focus independently, so your headset, webcam, or external drives stay connected to the current PC — even while switching screens.
Highlights:
- Lock USB and audio separately
- Prevent call or device dropouts
- Lock state remains after reboot
✅ Ideal for meetings, streaming, and multitasking
⚠️ USB focus ≠ keyboard & mouse focus — they switch separately
Avoid unwanted inputs during meetings, presentations, or idle time. With one button, you can lock screen output, audio, and all control interfaces.
- One-Touch Lock
Freezes display, disables USB, audio, hotkeys, and IR control. - PIN Unlock
Resume exactly where you left off by entering your custom password. - Peace of Mind
Prevents accidental switching — ideal for homes with kids or pets.
✅ Hotkeys and remote controls are disabled while locked.
⚠️ To unlock, press the Lock button again and enter your PIN.
To improve keyboard and mouse compatibility — especially during hotkey switching — we designed two specialized connection modes:
- Pass-Through Mode (Recommended)
Direct passthrough to the PC. Supports advanced drivers, macros, high-DPI mice, and multifunction input devices. Ideal for gaming, design, and pro workflows. - Legacy Emulation Mode
Ensures universal compatibility and stable hotkey functionality across most systems. Best for office or when driver issues occur.
✅ Hotkey commands only work when your keyboard is connected to the dedicated K&M port.
⚠️ Emulation Mode disables driver-based software and advanced features.
⚠️ Bluetooth keyboards/mice are not supported.
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Free Shipping
US / CA / UK · 3–5 Business Days
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30-Day Free Returns
Hassle-Free Return & Purchase Guarantee
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Extended Warranty: 1+2 Years
Register to unlock 2 extra years of coverage
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TESmart+ Members
Trade in for 30% off + Lifetime Tech Support
