I'm sorry about the issue. The first power cord adapter ADLX90NCT2A 90W is for the laptop, and the second power cord adapter ADLX65NLT2A 65W is for the docking station. The laptop uses more power, so its power adapter has more watts. However, you can use either adapters for the laptop, though the lower-watt power adapter might charge slower.
Please let me know if you have any further question. Please reply at the box below to continue. Thank you,