Specification:
100% High Quality and Brand New
Type: DC Converter Plug,PD E-Mark Chips
Connector A: USB Type C Female
Connector (s) B: 5.5*2.5mm/7.4*5.0mm/3.0*1.1mm/4.5*3.0mm/2.5*0.7mm/7.9*5.5mm.......Square Plug Male

Laptop Input Supported:18V-20V

Easy Plug and Use
Converter DC Plug Only!
Dc Plugs details as follows,

3.0mm*1.0mm For Acer Samsung Ultrabook
7.4mm*5.0mm For Hp 18.5V 3.5A,19V 4.74A,etc.
7.4mm*5.0mm For Dell 19.5V 3.34A,19.5V 4.62A,etc.
5.5mm*2.5mm For Lenovo Asus Toshiba......Laptop Adapter
4.5mm*3.0mm For Dell 19.5V 2.31A,19.5V 3.34A,etc.
4.5mm*3.0mm For Hp 19.5V3.33A 19.5V4.62A (Blue Tip)
2.5mm*0.7mm For Asus 19V 1.58A.etc.
4.0mm*1.35mm For Asus 19V 2.37A,19V3.42A
4.8mm*1.7mm For Hp 18.5V 3.5A
4.0mm*1.7mm For Lenovo Ideapad 20V 2.25A,20V3.25A
7.9mm*5.5mm For Lenovo 20V 3.25A,4.5A
5.0mm*3.0mm For Samsung 19V 3.16A
6.5mm*4.4mm For Sony 19.5V 3.3A,3.9A,4.7A
5.5mm*1.7mm For Acer 19V3.42A
Square Plug For Lenovo Thinkpad Yoga 20V3.25A 20V4.5A

Tips: This is the adapter plug converter via USB Type C Female to laptops,and it can withstand 100W (max) Power. Your USB C adapter or Power Bank should has enough power (wattage) to charge the laptop. This is very important. For example, your laptop input is 19V 4.74A 90W, (you can check it on the bottom of your laptop), then your USB C adapter should be not lower than 90w. Otherwise, it does not work. Please double check before purchase.