Can I use this 7.5V 2A adapter for a device that requires 7.5V 1A?

Yes, it is 100% safe to use this 7.5V 2A adapter on a 1A device. Your electronic device will only draw the amount of current (Amps) it needs to operate. In fact, using a higher amperage adapter means the charger won't have to work at maximum capacity, which helps it run cooler and last longer.

Is it safe to use a 9V adapter instead if I can't find a 7.5V one?

No, you should never use a 9V adapter on a device designed for 7.5V. While the current (Amps) can be higher, the voltage (Volts) must match your device's specifications exactly. Supplying 9V to a 7.5V circuit will likely cause overheating and permanently burn out the motherboard.

Why does the 5.5x2.1mm plug feel loose when I plug it into my device?

If the 5.5x2.1mm plug feels loose, your device likely requires a 5.5x2.5mm connector. While the outer diameter is the same, the inner pin on your device is too small for the 2.1mm hole, causing a poor connection. You can visit our Sham Shui Po store to find the correct adapter or a conversion tip.

Is the UK 3-pin plug on this adapter safe for use in Hong Kong?

Yes, the UK 3-pin plug (Type G) on this 7.5V 2A adapter is the exact standard used in Hong Kong. It plugs securely into your wall sockets without the need for any dangerous travel adapters or converters.

How do I know if my device is Center Positive?

You can find the polarity symbol printed on the specification label of your device (usually near the power port or underneath). A Center Positive symbol looks like a plus sign (+) pointing to the solid center dot, and a minus sign (-) pointing to the outer half-circle.

7.5V 2A Power Adapter | 5.5x2.1mm UK Wall Charger

Name: 7.5V 2A Power Adapter | 5.5x2.1mm UK Wall Charger
Brand: Sun Cheong Computer Company Limited
SKU: 21PA000320
Price: 38.0 HKD
Availability: InStock

Short Product Description

Lost or damaged your device's power supply? The 7.5V 2A AC/DC Power Adapter provides a stable and safe energy source for your essential electronics. Featuring a standard 5.5mm x 2.1mm barrel connector and a fused UK 3-pin plug, it is perfectly designed for routers, electronic scales, LED displays, and small home appliances. With universal 100-240V input, it guarantees reliable performance without overheating. Need a replacement charger immediately? 新昌電腦有限公司 (Sun Cheong Computer Co. Ltd.) has over 20 years of hardware expertise. Visit our Sham Shui Po physical store for instant pickup and let us test your device on the spot!

Key Features

Stable 7.5V 2A Output: Delivers reliable, continuous power to prevent device resets and ensure smooth operation of your electronics.
Universal 5.5x2.1mm Plug: Fits a massive variety of household and commercial devices using the standard barrel connector size.
Safe UK 3-Pin Design: Equipped with a standard Type G plug, ensuring safe and secure connection to Hong Kong wall sockets.
Wide Input Voltage: Supports 100-240V AC input, making it resilient against minor voltage fluctuations in your building's power grid.
Center Positive Polarity: Wired with the industry-standard center-positive configuration for maximum compatibility.
Instant Store Pickup: Don't wait days for shipping when your essential equipment is dead; grab a replacement instantly at our Sham Shui Po location.

Full Product Description

Reliable Replacement Power Supply

The 7.5V 2A AC/DC Power Adapter is the perfect replacement solution to bring your unpowered electronics back to life. Using a faulty or incorrect power supply can cause intermittent performance, overheating, or permanent damage to your device's motherboard. This high-quality adapter delivers a consistent 7.5 Volts and up to 2 Amps of current, ensuring your routers, medical monitors, or electronic scales receive the exact power they need to function optimally.

Standard 5.5x2.1mm Barrel Connector

Compatibility is key when selecting a replacement charger, and the 7.5V 2A AC/DC Power Adapter utilizes the industry-standard 5.5mm x 2.1mm barrel plug. This specific connector size (5.5mm outer diameter, 2.1mm inner diameter) is widely used across hundreds of consumer electronics. Combined with a standard UK 3-pin wall plug, it is ready for safe, immediate use in any Hong Kong household or office socket.

💡 Pro Tip from Our Technicians

"When replacing a lost power adapter, always check the polarity symbol on your device! This 7.5V 2A Power Adapter uses a Center Positive polarity, which is standard for most electronics, but plugging it into a Center Negative device can cause a short circuit. Also, while you must match the 7.5V exactly, using a 2A adapter on a device that only requires 1A or 1.5A is perfectly safe—the device will only draw the current it needs. Need help verifying your device's power requirements? Bring it to our Sham Shui Po store! Our team at 新昌電腦有限公司 (Sun Cheong Computer Co. Ltd.) will measure your port size and test it with the correct adapter on the spot."

Technical Specifications

Product Type: AC/DC Power Adapter (Wall Charger)
Input Voltage: 100-240V AC, 50/60Hz
Output Voltage: 7.5V DC
Maximum Output Current: 2A (2000mA)
Connector Size: 5.5mm (Outer Diameter) x 2.1mm (Inner Diameter)
Polarity: Center Positive (+ inside, - outside)
Plug Type: UK 3-Pin Plug (Type G)

Delivery Options

Local delivery within Hong Kong and in-store pickup.
Free shipping for orders of HK$400 or above; HK$35 shipping fee for orders below HK$400.
Shipped by SF Express, usually dispatched the same day for orders confirmed before 6:00 PM (Mon–Sat).
Estimated delivery time: 1–3 business days after dispatch (Hong Kong).
In-store pickup details (location and time) will be confirmed by email or phone message.
Delivery times are estimates and may be affected by weather or unforeseen circumstances.

FAQ Section

Can I use this 7.5V 2A adapter for a device that requires 7.5V 1A?Yes, it is 100% safe to use this 7.5V 2A adapter on a 1A device. Your electronic device will only draw the amount of current (Amps) it needs to operate. In fact, using a higher amperage adapter means the charger won't have to work at maximum capacity, which helps it run cooler and last longer.
Is it safe to use a 9V adapter instead if I can't find a 7.5V one?No, you should never use a 9V adapter on a device designed for 7.5V. While the current (Amps) can be higher, the voltage (Volts) must match your device's specifications exactly. Supplying 9V to a 7.5V circuit will likely cause overheating and permanently burn out the motherboard.
Why does the 5.5x2.1mm plug feel loose when I plug it into my device?If the 5.5x2.1mm plug feels loose, your device likely requires a 5.5x2.5mm connector. While the outer diameter is the same, the inner pin on your device is too small for the 2.1mm hole, causing a poor connection. You can visit our Sham Shui Po store to find the correct adapter or a conversion tip.
Is the UK 3-pin plug on this adapter safe for use in Hong Kong?Yes, the UK 3-pin plug (Type G) on this 7.5V 2A adapter is the exact standard used in Hong Kong. It plugs securely into your wall sockets without the need for any dangerous travel adapters or converters.
How do I know if my device is Center Positive?You can find the polarity symbol printed on the specification label of your device (usually near the power port or underneath). A Center Positive symbol looks like a plus sign (+) pointing to the solid center dot, and a minus sign (-) pointing to the outer half-circle.

Target Users / Applications

Retail Shop Owners: Replacing lost or broken power adapters for commercial electronic weighing scales or barcode scanners.
Home Network Users: Powering specific models of Wi-Fi routers, network switches, or modems that require a 7.5V input.
DIY Electronics Hobbyists: Providing a stable 7.5V power source for custom Arduino projects, LED light strips, or motorized toys.