USB C to DC 5.5mm x 2.1mm Power Cable Review
USB C to DC 5.5mm x 2.1mm Power Cable
When it comes to powering your devices on the go, versatility is key. The USB C to DC 5.5mm x 2.1mm Power Cable Review offers a simple yet powerful solution for converting USB-C PD (Power Delivery) output into a standard DC 12V connection. This makes it incredibly useful for laptops, tablets, cameras, and other electronics that rely on DC power but need the convenience of USB-C charging.
In this USB C to DC 5.5mm x 2.1mm Power Cable Review , we’ll break down its specifications, performance, compatibility, and real-world use cases to help you decide if this little cable is worth adding to your tech kit.
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Our Pick
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What’s in the Box?
The HSZJsto USB C to DC Power Cable doesn’t just give you a single cable—it’s a complete power conversion kit. Inside, you’ll find:
- 1-meter USB-C to DC cable
- 8 conversion plugs to fit different devices:
- 6.0 × 4.0mm
- 6.3 × 3.0mm
- 5.5 × 2.5mm
- 5.5 × 2.1mm
- 5.5 × 1.7mm
- 4.7 × 1.7mm
- 4.0 × 1.7mm
- 3.5 × 1.35mm
With these adapters, you can power a wide range of devices without carrying multiple chargers.
⚙ Specifications & Features
1. PD Smart Chip Technology
The built-in PD (Power Delivery) smart chip ensures the cable can convert a USB-C PD charger’s output to a DC 12V 3A connection. This is crucial for safely powering devices without damaging them.
Important: You’ll need a PD charger or PD power bank that supports 12V output to use this cable properly.
2. Output Power
- Maximum Output: 12V 3A (36W)
- Input Connector: USB-C
- Output Connector: DC barrel (5.5×2.1mm standard, with adapters for other sizes)
3. Compatibility
Perfect for:
- Cameras & camcorders
- Portable routers & modems
- LED lights & monitors
- Small laptops & tablets
- Audio equipment

4. Portability
Weighing almost nothing and measuring just 1 meter, this cable is extremely travel-friendly. It replaces bulky adapters, making it ideal for office use, studio setups, and travel.
5. Build Quality
The cable is made from high-quality copper wiring with durable insulation. This ensures low resistance and stable current flow. The connectors fit snugly, reducing the risk of accidental disconnection.
🛠 How to Use
- Connect the USB-C end to your PD charger or PD power bank.
- Attach the DC barrel connector (or one of the included adapters) to your device.
- Ensure your PD charger supports 12V output—without this, the cable won’t supply the correct voltage.
- Power on and enjoy stable 12V charging.
✅ Pros and ❌ Cons of USB C to DC 5.5mm x 2.1mm Power Cable
Pros:
- Wide compatibility with 8 adapter tips
- Lightweight & portable for travel
- Stable power delivery thanks to PD chip
- Replaces bulky AC adapters
- Durable build quality
Cons:
- Requires a 12V PD charger (not included)
- Limited to 36W output, so not suitable for high-power laptops
📊 Performance Testing
During testing, the cable performed consistently at 12V 3A when paired with a 65W PD charger. This was enough to power:
- A portable Wi-Fi router without interruption
- A 12V LED light panel for photography
- A mini portable speaker system
Voltage stability was excellent, with no noticeable drops during operation. This makes it reliable for sensitive electronics.
🧳 Perfect for Travel & Everyday Use
If you’ve ever traveled with multiple chargers, you know the struggle—bulky power bricks, tangled cables, and weight in your bag. The HSZJsto USB C to DC Power Cable solves that problem by letting you carry one PD charger and use it for both USB-C and DC-powered devices.
Paired with a PD power bank, you can even run your devices off-grid—great for photographers, campers, or digital nomads.

🔗 Related Product
If you’re looking for another versatile charging solution, check out our SLE-TECH Universal Chromebook Charger Review for a higher-wattage, laptop-friendly charger.
🏆 Final Verdict
The HSZJsto USB C to DC 5.5×2.1mm Power Cable is an affordable, compact, and highly versatile accessory for anyone with 12V DC-powered devices. It’s especially useful for travelers, photographers, and professionals who need a portable power solution.
While you’ll need to ensure your PD charger supports 12V output, this cable is a must-have if you want to reduce charger clutter and power multiple devices with one adapter.
⭐ Rating: 4.8/5 – Excellent portability and compatibility, slightly limited by PD charger requirements.