45W Adapters (19V–19.5V, ~2.31A–2.37A) - Used for lightweight Chromebooks, tablets, and small ultrabooks.
65W Adapters (19V–19.5V, ~3.33A–3.42A) - The standard choice for mainstream everyday laptops and business ultrabooks like HP ProBooks or Dell Inspirons.
90W to 130W Adapters (19V–19.5V, ~4.62A–6.7A) - Built for higher-performance standard laptops, mobile workstations, and entry-level graphics notebooks.
130W to 230W+ Adapters (19.5V–20V, 7.7A–10A+) - Required for heavy-duty gaming laptops (like HP Omen or Acer Predator) and high-end mobile workstations.
USB-C Power Delivery (PD) - Standard on most modern ultrabooks supporting fast charging from 45W up to 140W.
Barrel Connectors (Round Pins) - Vary by brand and size. Common sizes include 4.5mm and 7.4mm for Dell/HP, and 5.5mm or smaller pin tips for Acer and Lenovo