Certificates
Certification	CB/CCC/CECP/CE/BSMI/Morocco/ SEC/NOM/PSB/SII/TUV-GS/Ukraine/UL/RCM/ISC/SONCAP/ Kvalitet/Uzbek/TUV-S/INSM/KUCAS/KC,KCC/NRCan/ NOM-029/CU/BIS
Design
Product colour	Black
Features
Purpose	Laptop
Power supply type	Indoor
Input voltage	100 - 240 V
Input frequency	50 - 60 Hz
Output power	65 W
Output voltage	20 V
Output current	3.25 A
Brand compatibility	Lenovo
Operational conditions
Operating temperature (T-T)	0 - 40 °C
Operating relative humidity (H-H)	8 - 80%
Packaging content
Cables included	USB Type-C
Quantity per pack	1 pc(s)
Packaging data
Package width	264 mm
Package depth	110 mm
Package height	53 mm
Package weight	500 g
Package type	Box
Weight & dimensions
Cable length	0.1 m
Width	75.7 mm
Depth	48 mm
Height	22 mm
Weight	200 g

The Lenovo 4X21R04793 is a power supply for laptops, specifically designed for indoor use. It functions as a voltage converter, transforming the alternating voltage from the power grid into a direct voltage suitable for the laptop. The device is finished in black and features a compact design, characterised by small dimensions and low weight. The output power is 65 W, sufficient for many modern Lenovo laptops. The output voltage is 20 V at a current of 3.25 A, ensuring the required power for device operation. The input voltage range is 100 to 240 V, making the power supply usable worldwide in various power grids. The input frequency is 50 to 60 Hz, complying with standards in Europe, North America, and many other regions.

Applications
This power supply is intended for use in offices, home offices, or other indoor environments. It is not designed for outdoor use or humid conditions. The operating temperature ranges from 0 to 40 °C, and the relative humidity during operation must not exceed 8 to 80 %. These conditions are typical for controlled indoor environments and ensure reliable device performance.

Functions and Features in Detail
The device includes a USB Type-C connector serving as the output cable. This connector is standardised and enables easy connection to compatible Lenovo laptops. The cable has a length of 0.1 m, allowing for a short, compact connection between the power supply and the device. The compact design, with a width of 75.7 mm, depth of 48 mm, and height of 22 mm, ensures minimal space requirement. The weight is 200 g, making the device lightweight and portable.

Technology Explained Simply
The power supply converts alternating voltage from the power grid into direct voltage required by the laptop. The power output of 65 W is achieved by combining 20 V voltage with 3.25 A current. The input voltage range of 100 to 240 V allows use in various countries without modification. The frequency of 50 to 60 Hz is universally applicable. The use of gallium nitride (GaN) technology (as indicated by the Slim GaN designation) enables a more compact design and higher efficiency, resulting in more efficient operation and reduced heat generation.

Compatibility and Accessories
The power supply is designed for Lenovo laptops. It is specifically intended for devices that use a USB Type-C connector for power supply. The device is not suitable for other brands or devices with different connector types.

Installation and Mounting
Installation is performed by simply connecting the USB Type-C cable to the laptop and the power supply to a power outlet. No additional mounting effort is required. The packaging includes 1 piece of the power supply and the USB Type-C cable.

Operational Advantages
The power supply stands out for its compact design, low weight, and universal input voltage. The use of GaN technology ensures efficient power conversion and minimal heat generation. The short cable length of 0.1 m reduces cable clutter and allows for neat placement. Certifications include a wide range of international standards, such as CB, CCC, CECP, CE, BSMI, UL, RCM, TUV-GS, KC, KCC, NOM, PSB, SII, SONCAP, Kvalitet, Uzbek, TUV-S, INSM, KUCAS, NRCan, NOM-029, CU, BIS, confirming safety and compliance with respective regulations. The operating conditions are optimised for indoor environments, ensuring reliable performance in controlled settings.