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USB to DC Boost Cable 5V→9V/12V — 5.5×2.1mm & 3.5×1.35mm Adapter for Router & Modem
USB to DC Boost Cable 5V→9V/12V 5.5×2.1mm & 3.5×1.35mm Adapter for Router & Modem
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USB to DC Boost Cable 5V → 9V / 12V — 5.5×2.1mm & 3.5×1.35mm Adapter
This USB-A to DC barrel jack boost converter cable steps up a standard 5V USB power bank or charger output to 9V or 12V DC, enabling you to power routers, modems, network switches, and other 9V/12V devices directly from a USB power source. The built-in boost converter is integrated into the cable body. Includes both a 5.5×2.1mm and a 3.5×1.35mm DC plug adapter to cover the two most common barrel jack sizes used on routers and modems.
Key Specifications
| Parameter | Value |
|---|---|
| Input | USB-A, 5V DC |
| Output Voltage | 9V or 12V DC (select variant) |
| Output Current | 9V: up to 2A | 12V: up to 0.8A |
| DC Plug (primary) | 5.5×2.1mm barrel jack |
| DC Plug (adapter) | 3.5×1.35mm adapter included |
| Cable Length | Approximately 0.8m |
| Weight | ~38g |
| Origin | CN |
Why Use a USB Boost Cable?
- Power routers from power banks — Keep your router online during power outages using a standard USB power bank; no inverter or special UPS needed
- Dual plug compatibility — Included 3.5×1.35mm adapter covers TP-Link, D-Link, Netgear, and other routers that use the smaller barrel jack
- Compact boost circuit — Converter integrated into the cable body; no separate module or enclosure required
- 9V@2A output — Sufficient for most home routers and ADSL/fiber modems rated at 9V/1A or 9V/1.5A
- 12V@0.8A output — Suitable for 12V routers, LED strips, and small 12V accessories with low current draw
Compatible Devices (Examples)
- TP-Link routers (9V/0.85A, 9V/1A models) — use 5.5×2.1mm plug
- D-Link routers (12V/1A models) — use 5.5×2.1mm plug
- Netgear routers (12V/1.5A models) — verify current draw does not exceed 0.8A at 12V
- ADSL/fiber modems with 9V/12V DC input
- Small 12V LED strips and accessories
Frequently Asked Questions
Q: Can this power a router that requires 12V/1.5A?
The 12V variant outputs a maximum of 0.8A. A router requiring 1.5A at 12V (18W) exceeds this limit. Check your router’s power adapter label for the current requirement before ordering. The 9V@2A variant is suitable for most home routers rated at 9V/1A or 9V/1.5A.
Q: Does the USB power bank need to support any special protocol?
No special protocol (QC, PD) is required. The boost converter draws standard 5V from the USB port. Use a power bank with at least 2A USB output capacity for stable 9V@2A operation.
Package Contents
- 1× USB to DC Boost Cable (9V or 12V per selected variant)
- 1× 3.5×1.35mm DC plug adapter
- ★Product Description
- ★About us
- ★Custom cable
USB to DC Boost Cable 5V → 9V / 12V — 5.5×2.1mm & 3.5×1.35mm Adapter
This USB-A to DC barrel jack boost converter cable steps up a standard 5V USB power bank or charger output to 9V or 12V DC, enabling you to power routers, modems, network switches, and other 9V/12V devices directly from a USB power source. The built-in boost converter is integrated into the cable body. Includes both a 5.5×2.1mm and a 3.5×1.35mm DC plug adapter to cover the two most common barrel jack sizes used on routers and modems.
Key Specifications
| Parameter | Value |
|---|---|
| Input | USB-A, 5V DC |
| Output Voltage | 9V or 12V DC (select variant) |
| Output Current | 9V: up to 2A | 12V: up to 0.8A |
| DC Plug (primary) | 5.5×2.1mm barrel jack |
| DC Plug (adapter) | 3.5×1.35mm adapter included |
| Cable Length | Approximately 0.8m |
| Weight | ~38g |
| Origin | CN |
Why Use a USB Boost Cable?
- Power routers from power banks — Keep your router online during power outages using a standard USB power bank; no inverter or special UPS needed
- Dual plug compatibility — Included 3.5×1.35mm adapter covers TP-Link, D-Link, Netgear, and other routers that use the smaller barrel jack
- Compact boost circuit — Converter integrated into the cable body; no separate module or enclosure required
- 9V@2A output — Sufficient for most home routers and ADSL/fiber modems rated at 9V/1A or 9V/1.5A
- 12V@0.8A output — Suitable for 12V routers, LED strips, and small 12V accessories with low current draw
Compatible Devices (Examples)
- TP-Link routers (9V/0.85A, 9V/1A models) — use 5.5×2.1mm plug
- D-Link routers (12V/1A models) — use 5.5×2.1mm plug
- Netgear routers (12V/1.5A models) — verify current draw does not exceed 0.8A at 12V
- ADSL/fiber modems with 9V/12V DC input
- Small 12V LED strips and accessories
Frequently Asked Questions
Q: Can this power a router that requires 12V/1.5A?
The 12V variant outputs a maximum of 0.8A. A router requiring 1.5A at 12V (18W) exceeds this limit. Check your router’s power adapter label for the current requirement before ordering. The 9V@2A variant is suitable for most home routers rated at 9V/1A or 9V/1.5A.
Q: Does the USB power bank need to support any special protocol?
No special protocol (QC, PD) is required. The boost converter draws standard 5V from the USB port. Use a power bank with at least 2A USB output capacity for stable 9V@2A operation.
Package Contents
- 1× USB to DC Boost Cable (9V or 12V per selected variant)
- 1× 3.5×1.35mm DC plug adapter
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