4-Port USB K HUB Expansion Board for 3D Printers – ENIG PCB
4-Port USB K HUB Expansion Board for 3D Printers – ENIG PCB
4-Port USB K HUB Expansion Board for 3D Printers
Upgrade your 3D printing setup with the K HUB 4-Port USB Expansion Board — an industrial-grade accessory engineered for reliable, interference-free connectivity across all your printing peripherals. Featuring an ENIG (Electroless Nickel Immersion Gold) PCB and active fan cooling, this expansion board is built to handle demanding, extended print sessions with ease.
Key Features
- Dual Power Input: Accepts both 24V and 5V USB-C input, giving you flexible power options to match your existing 3D printer setup without any complicated modifications.
- Four Independent Isolated Ports: Each of the four USB ports delivers up to 1.5A output independently, enabling simultaneous power and data transfer to devices such as K Touch, Pad5 2.0, EBB 36/42 Gen 2 boards, cameras, and LED lighting — all without signal interference.
- Comprehensive Built-In Safety: Anti-polarity protection, over-current protection, and short-circuit protection work together to safeguard your mainboard and connected peripherals from accidental damage.
- ENIG Gold-Plated PCB: The gold-plated circuit board resists oxidation and ensures consistently reliable electrical conductivity over time, even in high-use environments.
- Active Fan Cooling: An integrated cooling fan maintains stable operating temperatures during long print jobs, preventing thermal throttling and extending board longevity.
- Durable Plastic Housing: Robust rectangular enclosure protects internal components while keeping the unit lightweight and easy to mount.
Specifications
| Type | K HUB 4-Port USB Expansion Board |
| Power Input | 24V or 5V USB-C |
| Output per Port | 1.5A (isolated) |
| Number of Ports | 4 |
| PCB Finish | ENIG (Gold-Plated) |
| Cooling | Active Fan |
| Housing Material | Plastic |
| Dimensions | Approx. 109.6 × 21.6 mm / 4.31 × 0.85 in |
| Control Method | Touch |
| Country of Origin | Made in Mainland China |
What's in the Box
- 1 × K HUB Expansion Board (4-Port USB)
Note: Please allow ±1–2 cm measurement tolerance due to manual measurement. Slight color variations may occur due to differences in display settings.
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Frequently Asked Questions
Q: What power inputs does the K HUB 4-Port USB Expansion Board support?
A: The K HUB expansion board supports both 24V DC and 5V USB-C power inputs, giving you the flexibility to integrate it seamlessly with a wide range of 3D printer power supplies and setups.
Q: Can all four USB ports be used simultaneously without interference?
A: Yes. Each of the four ports is electrically isolated with its own 1.5A output, allowing simultaneous power and data transfer to multiple devices — such as K Touch displays, EBB boards, cameras, and LED strips — without cross-interference.
Q: Is this expansion board compatible with Klipper-based 3D printers?
A: The K HUB is designed for use with Klipper-ecosystem accessories including K Touch, Pad5 2.0, and EBB 36/42 Generation 2 boards, making it an ideal hub for Klipper-based 3D printer builds and upgrades.
Q: Does the board require assembly?
A: Minimal assembly is required for mounting and connecting the board to your printer setup. No advanced electronics skills are needed — the board is ready to connect straight out of the box.
Production & Packaging Notice
To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.