HP 280 G3 MT Power Supply – Genuine OEM 180W Replacement

Part Number: L70042-001
Alternate Part Numbers: L70042-002, L70042-004, L70042-006, L81008-800, PA-1181-6HK, D16-180P1B

Restore Reliable Power to Your HP 280 G3 Micro Tower

Is your HP 280 G3 Micro Tower desktop failing to power on? Are you experiencing sudden shutdowns, random restarts, or system instability? These are classic signs of a failing internal power supply. At CompVate, we provide the ideal solution: a brand-new, genuine OEM 180W power supply, engineered exclusively for your HP 280 G3 Micro Tower system.

This is not a low-quality aftermarket unit. This is an authentic HP component, built to the exact specifications of your original equipment. By choosing this genuine replacement, you restore full stability, protect your internal components from power surges, and extend the life of your business or home office workstation.

Quick Compatibility Guide – Is This the Right Part?

Before you place your order, please verify that this power supply matches your specific system. This 180W unit is designed for the Micro Tower chassis in the following HP desktop series:

• HP 280 G3 Micro Tower

• HP 280 G4 Micro Tower

• HP 282 G3 Micro Tower

• HP 286 G3 Micro Tower

• HP 288 G3 Micro Tower

• HP ProDesk 400 G5/G6 Micro Tower

• HP ProDesk 480 G5/G6 Micro Tower

• HP ProDesk 600 G5/G6 Micro Tower

Important Form Factor Check

This 180W power supply is specifically designed for the Micro Tower version of these HP desktops. The Small Form Factor and Mini variants use different power supplies with distinct physical dimensions and connector layouts.

To confirm your system type:

• Look at the physical size of your current desktop chassis – Micro Tower models are standard tower cases, larger than Small Form Factor models.

• Check your existing power supply label for the model number or part number.

• Refer to your HP system specifications or the sticker on the side of your PC.

Using the wrong power supply can lead to physical incompatibility or electrical damage, so please double-check before purchasing.

Why Choose a Genuine OEM HP Power Supply?

1. Perfect Fit and Connector Compatibility

Aftermarket power supplies often use universal brackets or adapter cables that may not align properly with your HP motherboard. This genuine HP unit features the exact 4-pin and slim 7-pin connectors in the correct pinouts, ensuring a secure connection every time. The 7-pin connector is a proprietary HP design, and not all aftermarket units include the proper 7-wire configuration needed to avoid system errors.

2. Consistent 180W Power Delivery

Rated at a steady 180 watts, this power supply provides ample and stable energy for standard office configurations, including Intel processors, integrated graphics, storage drives, and standard RAM modules. It eliminates voltage fluctuations that can corrupt data or damage sensitive components.

3. Universal Voltage Compatibility

This power supply is designed for 100-240V AC input, making it suitable for use worldwide without the need for voltage converters or adapters. This flexibility makes it ideal for international businesses, travellers, or users in regions with different power standards.

4. Built-in Overvoltage and Short-Circuit Protection

Genuine HP power supplies include multiple layers of electrical safeguards. These protect your motherboard, central processing unit, and storage drives from unexpected power spikes or short circuits – something cheaper third-party units often lack.

5. Quiet and Efficient Operation

This OEM unit is designed with a temperature-controlled fan that runs quietly under normal loads. It balances cooling and noise levels, making it ideal for open-plan offices, shared workspaces, or quiet home environments.

6. Long-Term Reliability

HP engineers these power supplies to last through thousands of power cycles. When you replace your failing unit with this genuine part, you are investing in years of dependable service, reducing future downtime and maintenance costs.

Common Symptoms That Indicate a Failing Power Supply

If you are experiencing any of the following issues with your HP 280 G3 MT desktop, your power supply may need replacement:

• No power at all – The system does not respond when you press the power button, with no LED indicators or fan movement.

• Intermittent shutdowns – The computer powers off unexpectedly during moderate or heavy workloads.

• Random restarts – The system reboots without warning, often during startup or while running applications.

• Whining or clicking noises – Unusual sounds coming from the rear of the chassis, indicating a failing internal fan or capacitor.

• Peripheral malfunctions – USB devices, external drives, or keyboards disconnect and reconnect sporadically.

• Failure to wake from sleep – The system does not resume properly after entering power-saving mode.

If one or more of these symptoms match your situation, replacing the power supply is often the most cost-effective and reliable solution before other components become damaged.

Technical Specifications at a Glance

Upgrade Note for Power Users

If you are looking to upgrade your power supply for a more powerful graphics card or additional components, the HP 280 G3 MT chassis can support higher-wattage units. HP offers a 310W power supply option for this system, and some users have successfully installed 400W third-party units with compatible connectors. However, be aware that aftermarket units may not include the full 7-wire configuration required by the proprietary HP connector, which can trigger system errors. For maximum reliability, this genuine 180W unit remains the safest and most dependable choice for standard configurations.

Final Verdict – Why Buy From CompVate?

At CompVate, we specialise in providing genuine, high-quality replacement parts for business-grade desktops and workstations. We understand that downtime costs you money, which is why we stock authentic components that install correctly the first time.

When you choose this HP L70042-001 power supply from us, you are getting:

• A 100 percent genuine OEM part – no substitutes

• Universal voltage compatibility for worldwide use

• Accurate compatibility verification

• Professional packaging to ensure safe delivery

• Responsive customer support for pre-sales and post-sales questions

Restore your HP 280 G3 Micro Tower to full operational health. Order your replacement power supply today and get your workflow back on track.