Lenovo AC adapter, output 12V, 3A, with a square connector. Operation confirmed. Please note that although it has the same square connector, it is a different size from the 20W Lenovo adapter. - Brand: Lenovo - Model: ADLX36NCT2 - Input: 100-240V 1.5A - Output: 12V 3A - Cable length: Approximately 1.5m Matching voltage (V) is a mandatory requirement. Amperage (A) and wattage (W) are acceptable if they meet or exceed the PC's requirements. *Returns due to differences in connector shape are not accepted.* 【Example of compatible models (reference)】 ・Lenovo ThinkPad / IdeaPad series low-power models ・Some NEC Lavie / NEC laptops *The above is a reference example.* Please be sure to confirm that your model supports 12V 3A/36W output and that the connector shape matches, using the manufacturer's official information (specifications page, etc.) before purchasing. Thank you for viewing.