About this item The 7.4 x 5.0mm adapter must be 230w/160w or higher than 3Pin. You can connect the 230w/160w DC 7.4mm adapter to charge a 3Pin laptop. Compatible for 230W RC30-0248 Blade charger compatible with Blade 15 of model GTX1070/RTX2070/RTX2080 and Blade Pro 17. (Tips: Please check the connector type before placing an order!) Input (DC): 7.4 x 5.0mm JACK and 19.5V. The Blade charger cable provides strong protection against overheating, overcurrent, short circuit, overvoltage, and overcharge. Output (DC): 3Pin plug and 19.5V. Dimensions: 6.89 x 4.25 x 1.02 inches.