IMPORTANT: 1.This PD DC adapter must use a PD (USB-C Male) power adapter or a PD USB Type C Male to Male Cable. 2.Please use the PD charging wall charger corresponding to the wattage of your laptop. This charging adapter is compatible with power supply below 100. Excessive power will cause overload. 3.Please note the Type-C charger power must be over than the output end.Power shortage will cause charging failure. 4.Only for Charging, not Syncing data.Features:1.Color:Silver grey 2.Build-in the PD chip 3.Input: Type-C Female 4. Output: Slim-Tip Male , DC 18v-20v(not support 5v),100W,5A 5.Material: Tin plated copper & Aluminum alloy 6.Weight: 6.5g.The friendly design of the USB-C to Lenovo Slim-Tip PD Adapter effectively helps you get rid of heavy high-power charging blocks.To save weight on trips to/from office where you need charging laptops,this saved you from having to carry heavy power bricks.7.Compatible Models?Partial List?: ThinkPad X1 Carbon 2nd, 3rd, and 4th Generations. IMPORTANT! Compatible with 2nd 3rd 4th Gen X1 Carbon ONLY! This PD adapter is not compatible with 1st generation X1 Carbon! If you are using a newer-generation X1 Carbon, your laptop requires a USB Type-C connector - please check the "Connector Compatibility" photo before purchasing if you are unsure! Lenovo Thinkpad X1 Yoga 1st Generation IMPORTANT! X1 Yoga 1st Generation ONLY! Compatible with Lenovo Yoga: 2, 11, 11E, 12, 13, 730-15 Lenovo T Series: T431s, T440, T440p, T440s, T450, T450s, T460, T460s, T470, T470s, T550, T560, T570, TP25 Lenovo X Series: X240, Lenovo Z Series: Z50, Z50-70, Z50-75 Lenovo E Series: E431, E440, E450, E455, E460, E465, E470, E475, E531, E540, E550, E550c, E555, E560, E565, E570, E575 Lenovo L Series: L440, L450, L460, L470, L540, L560, L570 Lenovo B Series: B40-30, B50-30, B50-35, B50-70, B5400 Lenovo S Series: S431, S440, S531, S540 Package:1 x PD Adapter