Dell OptiPlex 755 User's Guide - Page 233

Inside Your Computer CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide. CAUTION: To avoid electrical shock, always unplug your computer from the AC power adapter before removing the cover. NOTICE: To prevent static damage to components inside your computer, discharge static electricity from your body before you touch any of your computer's electronic components. You can do so by touching an unpainted metal surface on the computer chassis. 1 2 6 3 5 4 1 fan shroud/heat sink assembly 2 speaker (optional) 3 memory modules (2) 4 hard drive 5 security cable slot 6 chassis intrusion switch Chassis Intrusion Switch CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide. NOTE: The chassis intrusion switch is standard on the ultra small form factor computer but is optional on mini tower, desktop and small form factor computers; it may not be present on your computer. Ultra Small Form Factor Computer 233