Original HP Laptop DC Charging Jack with Cable Model 799736-S57 - Reliable Power Connection Solution
Professional and authentic DC power jack with charging cable harness designed for HP laptops. This power connector is identified under part number 799736-S57 and is also cataloged under the alternate codes 799736-Y57 and 799736-001, classified within the laptop charging-port and power-connector category. The unit serves as a direct replacement for a worn, loose, or damaged charging port and restores stable power delivery to the device.
Detailed Technical Specifications and Complete Compatibility Information
| Part Number | 799736-S57 |
| Alternate Identifiers | 799736-Y57, 799736-001, 799736-T57 |
| Category | Laptop DC Power Jack with Cable |
| Component Type | DC Jack / Charging Port Harness |
| Compatible Models | HP Pavilion 15-AC, 15-AF, 250 G4, 255 G4 (e.g. 15-AC113CL, 15-AC121DX, 15-AC163NR) |
| Input Voltage | 19.5V |
| Device Type | Laptop / Notebook |
| Manufacturer | HP Compatible / OEM Quality |
The charging jack is manufactured to strict OEM quality standards and delivers a stable, low-resistance power connection between the AC adapter and the laptop motherboard. The pre-attached cable harness terminates in a dedicated connector that plugs directly onto the board, eliminating the need for soldering in most installations and ensuring consistent charging performance over long-term use.
Key Features and Complete Compatibility
Verified compatibility with the HP Pavilion 15-AC and 15-AF families as well as the 250 G4 and 255 G4 notebooks, covering common market variants such as 15-AC113CL, 15-AC121DX, and 15-AC163NR. The unique part number 799736-S57 precisely identifies this jack-with-cable assembly and distinguishes it from solder-on bare jacks.
The connector is built from quality materials including a durable barrel contact, reinforced solder/crimp joints, and a flexible insulated cable that resists fatigue from repeated plug-in cycles. The 19.5V rating matches the standard HP adapter output, supporting the full current range used across these models for reliable charging under load.
Replacement is typically required when the laptop charges only intermittently, must be held at a certain angle to charge, shows a loose or wobbly adapter plug, or stops charging entirely. The process involves partial disassembly of the laptop, removing the bottom cover, disconnecting the battery, routing out the old harness, and seating the new jack and cable into the exact original position before reconnecting the board connector.
Signs indicating a faulty charging jack include the battery not charging despite a working adapter, sparking or heat at the connector, a physically loose port, or a charge indicator that flickers on and off. In some cases the fault may lie in the AC adapter or the power circuitry on the motherboard rather than the jack itself, so careful diagnosis before replacement is recommended.
This component is essential for keeping the laptop powered and the battery charged, and is intended for professional technicians, repair-shop owners, and advanced users seeking a dependable replacement. The combination of an authentic-quality connector, guaranteed compatibility with the listed models, and a ready-to-install cable harness ensures a successful repair and restores the laptop to reliable charging. Please verify the exact laptop model and series before purchase to ensure correct fitment.
