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Power Adapter Charger for Asus R500A-RH51
KSh 3,109.00
Technical Specifications
| Metric | Verified Hardware Target |
| Exact Model Support | Asus R500A-RH51 |
| Physical Connector Profile | 5.5mm × 2.5mm Standard Straight Circular Plug (No inner center pin needle) |
| Output Voltage Standard | 19 Volts (DC) |
| Amperage Handling Threshold | 3.42 Amperes (Note: Fully compatible with 19V 4.74A 90W bricks as a premium upgrade, which allows the transformer to run even cooler under heavy loads). |
| Total Wattage Rating | 65 Watts |
| Input Grid Compatibility | AC 100V – 240V, 50Hz – 60Hz Universal Range |
| Form Factor Configuration | Inline external desktop transformer block matched with a detachable 3-prong AC power cord |
Power Adapter Charger for Asus R500A-RH51
The Asus R500A-RH51 is a standard 15.6-inch laptop configuration built around an Intel Core i5 processor and integrated Intel HD Graphics. Because it runs on a traditional motherboard architecture rather than ultra-low-voltage modern setups, it maintains a steady, continuous power requirement during heavy workloads, such as database processing, tab management, or video rendering. Supplying an exact, ripple-free direct current (DC) line is necessary to prevent random system freezing, micro-throttling of processing speeds, or premature logic board wear.
Using cheap, unverified replacement chargers poses operational risks. Lower-grade bricks lack clean line-filtering components, sending electrical ripple noise into the laptop’s power rails. This can result in erratic touchpad behavior (like cursor jumping), audible coil whine, or severe thermal buildup in the internal battery charging circuit.
Asus R500A-RH51 Product Overview
This specific replacement power supply is built to handle the native amperage loads and barrel mechanics of the Asus R500A-RH51 motherboard. The chassis uses the traditional 5.5mm outside diameter by 2.5mm inside diameter (5.5mm × 2.5mm) straight circular barrel connector. Unlike modern thin-pin or type-C connectors, this rugged barrel seats deeply within the charging port, providing excellent resistance against structural cable pulling and eliminating weak connections that can trigger arcing or melted charging ports.
Asus R500A-RH51 Key Features
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Rugged 5.5mm × 2.5mm Barrel Pin: Fits securely into the laptop’s charging port to avoid physical play, sparking, or unexpected disconnections.
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Stable 19V DC Output: Delivers a flat 19V line, enabling the Core i5 processor to hold its maximum Turbo Boost clock speeds comfortably under load.
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Excellent Efficiency Headroom: Built to handle concurrent computing tasks and fast battery charging cycles without causing extreme brick heat.
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Internal Protection Circuitry: Integrated safety paths defend your laptop’s core electronics from over-voltage (OVP), over-current (OCP), and short-circuit (SCP) anomalies.
Asus R500A-RH51 Technical Specifications
| Metric | Verified Hardware Target |
| Exact Model Support | Asus R500A-RH51 |
| Physical Connector Profile | 5.5mm × 2.5mm Standard Straight Circular Plug (No inner center pin needle) |
| Output Voltage Standard | 19 Volts (DC) |
| Amperage Handling Threshold | 3.42 Amperes (Note: Fully compatible with 19V 4.74A 90W bricks as a premium upgrade, which allows the transformer to run even cooler under heavy loads). |
| Total Wattage Rating | 65 Watts |
| Input Grid Compatibility | AC 100V – 240V, 50Hz – 60Hz Universal Range |
| Form Factor Configuration | Inline external desktop transformer block matched with a detachable 3-prong AC power cord |
Asus R500A-RH51 Price Breakdown
Sourcing a properly insulated, high-spec charger prevents internal components from experiencing electrical strain and ensures steady charging cycles:
| Power Supply Configuration | Estimated Retail Price Range (KES) | Recommended Application |
| Premium / Original 65W AC Adapter | KES 3,000 – KES 4,000 | The official hardware standard. Safely handles active everyday computing, screen brightness variations, and full-speed battery charging loops. |
Note: Sourcing costs across tech dealers in Nairobi, Mombasa, Kisumu, Nakuru, and Eldoret may fluctuate depending on container import logistics and the replacement warranty term provided (customarily standardizing around 6 to 12 months).
Asus R500A-RH51 Pros & Cons
Pros:
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Excellent Port Durability: The heavy-duty 5.5mm x 2.5mm barrel layout handles traveling strain and cable bends much better than modern brittle thin pins, keeping the internal DC jack safe.
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High Part Availability: Because this exact power profile is highly standardized across older laptop frameworks, finding an emergency backup or office replacement is simple.
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Thermally Stable Design: Operates within a low heat-loss window, keeping the external block within safe, lukewarm operational temperatures during all-day use.
Cons:
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Incompatible with Modern Micro-Pins: This large barrel plug cannot fit modern ultra-slim Asus ZenBook or VivoBook platforms requiring 4.0mm or 3.0mm charging ports.
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No Power Delivery (PD) Splitting: Does not support USB Type-C charging adapters, meaning it cannot double as a charging source for modern smartphones or tablets.
Asus R500A-RH51 Verdict
To preserve your laptop’s performance and charging health, choosing an adapter pushing 19V through a 5.5mm × 2.5mm circular barrel plug is crucial. Deploying a high-quality 65W power supply ensures a steady energy flow—preventing processing bottlenecks, slowing battery charge curves, or circuit strain during high-demand workloads.







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