HP dx2480 Hardware Reference Guide: HP Compaq dx2480 Business Desktop MIcrotow - Page 12

2 Hardware Upgrades Serviceability Features The Microtower computer includes features that make it easy to upgrade and service. A Torx T-15 screwdriver is needed for many of the installation procedures described in this chapter. Warnings and Cautions Before performing upgrades be sure to carefully read all of the applicable instructions, cautions, and warnings in this guide. WARNING: To reduce the risk of personal injury from electrical shock ! and/or hot surfaces, be sure to disconnect the power cord from the wall outlet and allow the internal system components to cool before touching. ! WARNING: To reduce the risk of electrical shock, fire, or damage to the equipment, do not plug telecommunications/telephone connectors into the network interface controller (NIC) receptacles. ! WARNING: To reduce the risk of electrical shock, before removing the computer cover ensure that telecommunication/telephone connector (TNV circuit) are disconnected CAUTION: Static electricity can damage the electrical components of the computer or optional equipment. Before beginning these procedures, ensure that you are discharged of static electricity by briefly touching a grounded metal object. See Chapter 5, "Electrostatic Discharge" for more information. CAUTION: Before removing the computer cover, ensure that the computer is turned off and that the power cord is disconnected from the electrical outlet. CAUTION: To reduce the risk of fire, use only No. 26 AWG or larger (e.g., 24 AWG) UL Listed or CSA Certified Telecommunication Line Cord Hardware Reference Guide www.hp.com/in 2-1