USB DC 5V to 9V/12V Step-Up Power Supply Module with 2.1x5.5mm Plug Adapter Cable

USB 5V to 9V / 12V Step-Up Boost Power Cable — DC 5.5×2.1mm Plug, 0.8A, 1m

A USB-A to DC barrel jack boost converter cable that steps up a standard 5V USB power bank or charger output to 9V or 12V DC, enabling you to power routers, modems, network switches, car air purifiers, and other 9V/12V devices directly from a USB power bank. The built-in boost converter circuit is integrated into the cable body. Available in three variants: 5V pass-through, 9V boost, and 12V boost.

Variants

• 5V: Pure pass-through cable — USB input 5V, DC output 5V. No boost circuit. For 5V DC barrel jack devices.
• 9V: Boost cable — USB input 5V, DC output 9V @ 0.8–1A. For 9V routers, modems, and accessories.
• 12V: Boost cable — USB input 5V, DC output 12V @ 0.8A max. For 12V routers, LED strips, and accessories.

Key Specifications

• Input: USB-A, 5V
• Output Voltage: 5V / 9V / 12V (select variant)
• Output Current: 0.8A max (9V and 12V variants); no limit for 5V pass-through
• DC Plug: 5.5×2.1mm and 5.5×2.5mm compatible
• Cable Length: Approximately 1 meter
• Weight: ~30g

Important Notes

• For 12V variant: output current must not exceed 0.8A — do not use with devices requiring more than 0.8A at 12V
• USB power bank must support at least 1.5A output at 5V to reliably power the 12V boost circuit at 0.8A output
• Not suitable for high-current 12V devices (motors, high-power LED strips) — use a dedicated 12V power supply for those
• Check your router/modem label for voltage and current requirements before use

Typical Applications

• Power bank → 12V router/modem during power outages
• Power bank → 9V/12V network switch for portable networking
• USB charger → 12V car air purifier or fan
• 5V USB → 9V/12V for Arduino projects and embedded systems
• Travel power solution for 9V/12V devices without AC adapter

Package Contents

• 1 × USB to DC boost cable (5V, 9V, or 12V output as selected), ~1m length

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