USB DC 5V to DC 9V/12V Step-Up Booster Converter Adapter Cable

USB DC 5V to DC 9V/12V Step-Up Booster Converter Adapter Cable is a plug-and-play USB voltage boost converter cable with a built-in LED voltage display, slide-switch 9V/12V selector, and a 5.5mm × 2.1mm DC barrel plug (plus a 3.5mm × 1.35mm adapter tip). Engineered to step up standard 5V 2A power from any USB power bank or USB wall port to a regulated 9V or 12V DC output, it keeps Wi-Fi routers, fiber ONT modems, and CCTV cameras running without interruption during mains power outages.

Key Features:

• Switch-Selectable 9V / 12V Output: Integrated side slide switch toggles the boosted output voltage between 9.0V DC and 12.0V DC instantly.
• Real-Time 3-Digit LED Voltmeter: Built-in red 7-segment LED display inside the USB housing shows the live output voltage (9.0V or 12.0V) at a glance.
• Universal USB-A Input: Plugs into any 5V 2A USB power bank, laptop USB port, or USB wall charger to create an instant portable 9V/12V DC supply.
• Dual Barrel Plug Compatibility: Terminated with a standard 5.5mm × 2.1mm center-positive DC plug and includes a detachable 3.5mm × 1.35mm adapter plug for smaller router jacks.
• Built-In Smart Protection IC: Protects both the USB power bank and connected router against overcurrent, overvoltage, short circuit, and thermal overload.

Technical Specifications:

• Input Voltage: 5.0V DC (via Standard USB Type-A Male Plug; 5V 2A source recommended)
• Selectable Output Voltage: 9.0V DC or 12.0V DC (Slide-Switch Selectable)
• Maximum Output Current: 0.8A to 1.0A at 9V DC | 0.6A to 0.8A at 12V DC (~6W–9W Max)
• Display Type: 3-Digit Red 7-Segment LED Voltage Readout
• Output Polarity: Center-Positive (Inner Pin +, Outer Barrel -)
• Cable Length: ~80 cm to 100 cm

Mechanical Specifications:

• Controller Housing: Molded Black ABS Inline USB Housing with Transparent LED Window
• Primary Output Connector: 5.5mm × 2.1mm Male DC Barrel Plug
• Included Adapter Tip: 5.5×2.1mm Female to 3.5mm × 1.35mm Male DC Plug Adapter

Dimensions:

• USB Booster Housing: 60 mm × 23 mm × 14 mm
• Total Cable Length: ~850 mm
• Weight: ~36 g

Pinout and Wiring:

• USB Type-A Male Plug: Insert into a 5V 2A USB power bank or USB adapter.
• 9V / 12V Selector Switch: Check your router’s rating label (9V or 12V) and set the slide switch BEFORE plugging the barrel jack into your device.
• DC Barrel Jack (5.5×2.1mm / 3.5×1.35mm): Center pin is Positive (+9V/+12V); outer sleeve is Ground (GND).

Datasheet Reference:

• Converter Topology: 1.2MHz Synchronous/Asynchronous Step-Up DC-DC Boost Regulator + Digital Voltmeter IC
• Usage Precaution: Not suitable for high-current 12V 2A/3A routers or motors exceeding 8W–9W continuous draw.

Commonly Used in:

• Emergency Power Bank Backup for Wi-Fi Routers & Fiber Broadband Modems
• Portable 9V/12V Power for Arduino UNO/Mega & Development Boards
• 9V Guitar Effects Pedals and Wireless Microphone Receivers
• 12V LED Desk Lamps, Mini Cooling Fans, and CCTV Test Monitors

Applications:

• Powers a 9V or 12V home Wi-Fi router directly from a standard 5V smartphone power bank during load-shedding or power cuts.
• Eliminates bulky AC wall adapters when powering 9V/12V test instruments, multimeters, or Arduino boards in the field.
• Includes the 3.5×1.35mm adapter tip to fit both standard 5.5×2.1mm TP-Link/D-Link routers and compact 3.5mm GPON/ONT modems.

Equivalent Models:

• DC-DC USB 5V to 1.2V-24V Adjustable Buck-Boost Power Regulator Module: Continuously variable 1.2V–24V USB buck-boost board with rotary potentiometer.
• 3.7V to 12V Mini DC-DC Boost Module: Bare PCB step-up converter with solder-jumper 5V/8V/9V/12V selection.

Package Includes:

• 1 × USB DC 5V to DC 9V/12V Step-Up Booster Converter Adapter Cable