1. Installing Internal Optional Devices
Express5800/B120e User's Guide
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Chapter 2 Preparations
1.3.2
Removal of air duct
Take steps below to remove air duct. (Required when installing CPU and DIMMs)
1.
While pushing latches on both sides of air duct, slowly pull the air duct upward to remove it.
Important Make sure the front-rear direction of air duct according to markings on top face.