Final answer:
The correct resources to find the part number for supported memory are the Product Troubleshooting Guide and HP Part Surfer.
Step-by-step explanation:
When you are replacing memory on a customer's computer and need to find the correct part number for supported memory, two resources that can provide this information are the Product Troubleshooting Guide and HP Part Surfer. The Product Troubleshooting Guide typically contains detailed information about the computer's specifications and compatible parts, including memory. HP Part Surfer, on the other hand, is an online tool provided by HP that allows you to search for specific parts by entering the computer's model or serial number. It will provide you with the correct part number for supported memory.