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Power Adapter Charger for Asus S550CA
KSh 3,109.00
Technical Specifications
| Metric | Verified Hardware Target |
| Exact Model Support | Asus S550CA |
| Physical Connector Profile | 5.5mm × 2.5mm Standard Circular Barrel Plug (Completely hollow tip with no interior pin) |
| Output Voltage Standard | 19 Volts (DC) |
| Amperage Handling Threshold | 3.42 Amperes |
| Total Wattage Rating | 65 Watts (Note: The 19V 3.42A 65W matrix is the required factory standard for the S550CA. While some lower-power 45W chargers use the exact same physical 5.5mm barrel size, running an underpowered 45W block will cause the charger to severely overheat, delay battery recharge times, and may bottleneck system performance under load). |
| Input Grid Compatibility | AC 100V – 240V, 50Hz – 60Hz Universal Range |
| Form Factor Configuration | Inline external transformer block matched with a detachable 3-pin AC wall cord |
Power Adapter Charger for Asus S550CA
The Asus S550CA is a prominent model within the VivoBook Touch Ultrabook series, driven by energy-efficient Intel Core i3, i5, or i7 processors paired with integrated Intel HD Graphics. Because this specific sub-variant integrates a highly sensitive capacitive touchscreen digitizer pane, its electrical demands require clean, ripple-free current. To prevent ghost touches on the display and ensure fast battery charging cycles, the device demands a highly stable direct current (DC) line.
Never use low-quality generic or uncertified multi-tip universal power supplies on this laptop. Cheaply made chargers omit the necessary internal smoothing capacitors and proper electromagnetic shield barriers. Without these components, high-frequency electrical line noise bleeds straight into the motherboard, resulting in erratic trackpad tracking, phantom touchscreen clicks, and premature breakdown of the internal battery cells.
Asus S550CA Product Overview
This dedicated replacement power supply is precision-built to match the exact factory voltages and mechanical port requirements of the Asus S550CA chassis. The internal charging socket on this notebook relies on the legacy 5.5mm outside diameter by 2.5mm inside diameter (5.5mm × 2.5mm) large round barrel connector. This thick barrel plug profile seats deeply and firmly within the notebook’s lateral input port, offering substantial structural durability that resists accidental cable tugs and avoids loose contacts.
Asus S550CA Key Features
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Heavy-Duty 5.5mm × 2.5mm Plug Tip: Thick, robust barrel architecture resists bending, cracking, or wearing loose after hundreds of plugging cycles.
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Optimized 65W Continuous Delivery: Comfortably supplies the Core processor, internal logic gates, and touchscreen digitizer simultaneously under full workload conditions.
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Active Smart Circuit Protection: Integrated controllers defend the laptop’s power rails against over-voltage (OVP), over-current (OCP), and short circuits (SCP).
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Thermally Conductive Block Layout: The outer case is molded from fire-retardant composite materials engineered to dissipate operational heat uniformly.
Asus S550CA Technical Specifications
| Metric | Verified Hardware Target |
| Exact Model Support | Asus S550CA |
| Physical Connector Profile | 5.5mm × 2.5mm Standard Circular Barrel Plug (Completely hollow tip with no interior pin) |
| Output Voltage Standard | 19 Volts (DC) |
| Amperage Handling Threshold | 3.42 Amperes |
| Total Wattage Rating | 65 Watts (Note: The 19V 3.42A 65W matrix is the required factory standard for the S550CA. While some lower-power 45W chargers use the exact same physical 5.5mm barrel size, running an underpowered 45W block will cause the charger to severely overheat, delay battery recharge times, and may bottleneck system performance under load). |
| Input Grid Compatibility | AC 100V – 240V, 50Hz – 60Hz Universal Range |
| Form Factor Configuration | Inline external transformer block matched with a detachable 3-pin AC wall cord |
Asus S550CA Price Breakdown
Acquiring a properly regulated, high-quality replacement power unit keeps your touch-enabled system well-defended against sudden grid surges:
| Power Supply Configuration | Estimated Retail Price Range (KES) | Recommended Application |
| Premium Standard 65W AC Adapter (5.5mm Tip) | KES 2,500 – KES 3,500 | The official hardware standard. Safely handles daily office multitasking, web browsing, touchscreen interactions, and continuous media streaming. |
Asus S550CA Pros & Cons
Pros:
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Excellent Physical Reliability: The sturdy 5.5mm plug barrel stands up to heavy wear much better than modern, ultra-thin micro-pins that snap easily.
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Broad Regional Availability: Because this 19V 5.5mm blueprint has been extensively deployed across multiple legacy Asus generations, finding a replacement locally is fast and straightforward.
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Safe Operational Thermals: The 65W transformer headroom ensures the power supply block effortlessly stays well within safe operating temperatures during fast charging cycles.
Cons:
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Bigger Profile: The combined mass of the transformer brick and thick AC power cord takes up slightly more space in your bag than a modern USB-C wall wart.
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Incompatible with Modern Ultra-Slims: This larger 5.5mm connector will not physically fit into modern, thin-profile Asus ZenBook or VivoBook laptops that require smaller 4.0mm or 3.0mm micro-tips.
Asus S550CA Verdict
To keep your touchscreen interface performing optimally and preserve your motherboard’s power delivery phases, equipping your machine with a high-grade 19V replacement charger featuring a 5.5mm × 2.5mm circular barrel tip is the required path. Selecting this matching hardware standard guarantees clean, uninterrupted power delivery, keeping your VivoBook running safely throughout your workday.







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