What does Apple recommend you do before replacing or installing any internal parts in an Xserve?

What is the function of the PMU in an Apple desktop computer?

A customer states that he cannot transfer files over the Internet after connecting his new iMac (Early 2006) to his cable modem via Ethernet. According to the Apple General Troubleshooting Flowchart, which of the following is the most efficient area to pursue FIRST?

Examine the exhibit. Is this the correct tool to remove the bezel on the iMac (Early 2006)?

Examine the exhibit. Notice the lack of IP address information for built-in Ethernet. What is the most likely cause of this condition?