The `Arduino Nano and WS2812B Light Your Life` symbol you have chosen is a User Contributed part. It is strongly advised that you check the pin designations of any User Contributed parts as they are not checked by the EasyEDA Team. You can of course clone the part and edit it to correct the pin designations and then save it with a description to distinguish it from the other User Contributed parts. Note: if you create a modified part please use `and` instead of the `&` symbol in the name. This is because the `&` character is substituted by the `&` string and so does not show up in a search for `Arduino Nano and WS2812B Light Your Life`. It is also possible to use `+` instead of `&`. * If you can post links to datasheets defining the schematic pin designations and PCB footprint then I am happy to check your modified part against them and get it put into the `System Components` library.