Product Overview
This smart trigger cable converts USB‑C female to 5521 barrel plug, fixed 9V.
Designed for 9V devices like ONT, routers, smart speakers,
projectors – power them with any PD/QC charger or power bank. This is a true usb c to dc solution.
Key Specifications:
Input Connector: Type-C female
Output Connector: 5521 male (5.5 × 2.1 mm)
Supported Protocols: Dual protocols—PD (Power Delivery) and QC (Quick Charge)
Output Voltage: Fixed at 9V
Maximum Current: 3A
Maximum Power: 27W
Cable Material: PVC
Use Cases
Home – PD charger for ONT/router. Office – QC power bank for projector/speaker. Travel – one cable + power bank for multiple 9V devices.
Emergency – perfect original adapter replacement. Also,this is not a ring barrel plug to usb‑c adapter.
**Q1: How do I know if my device is compatible?** Check your device‘s original power adapter label: - Look for **“OUTPUT: 9V”** (or 9V/1A, 9V/2A, etc.) - Check if the barrel plug is **5.5mm x 2.5mm (5525)** - If both match, this adapter works! **Q2: Will this work with my specific router/modem?** If your router uses 9V DC input with a 5.5×2.5mm barrel, yes！Check your original adapter‘s “OUTPUT” label to confirm 9V. **Q3: Can I use this with a power bank?** Yes—this is the most common use case! As long as your power bank has a USB-C port and supports 9V PD output (most 10,000mAh+ PD power banks do). Connect the adapter, plug in your router, and stay online during outages. **Q4: Will this damage my router?** No. This adapter outputs **fixed 9V**—the exact voltage your 9V router requires. It also has built-in over-current and short-circuit protection. However, **do NOT use with 5V or 12V devices**—this adapter outputs 9V only. **Q5: What is the difference between 5525 and 5521?** 5525 = 5.5mm outer diameter, 2.5mm inner diameter (pin). 5521 = 5.5mm outer, 2.1mm inner. **This adapter is 5525**—the most common size for routers. Measure your device‘s barrel or check the original adapter to confirm.