Table 13. Number of fans based on system configurationSystem configuration Number of fansSystems with four 3.5-inch hot swappable or cabled hard drives and expansioncard4Systems with four 3.5-inch hot swappable or cabled hard drives and withoutexpansion card3Systems with two 2.5-inch cabled hard drives and expansion card 3Systems with two 2.5-inch cabled hard drives and without expansion card 2Removing the cooling fan blankPrerequisitesCAUTION: Many repairs may only be done by a certified service technician. You should onlyperform troubleshooting and simple repairs as authorized in your product documentation, or asdirected by the online or telephone service and support team. Damage due to servicing that isnot authorized by Dell is not covered by your warranty. Read and follow the safety instructionsthat came with the product.NOTE: The procedure for removing each cooling fan blank is identical.1. Ensure that you follow the Safety instructions.2. Follow the procedure listed in Before working inside your system.Steps1. Press the release tabs and push the cooling fan blank to disengage it from the cooling fan bracket.2. Lift the cooling fan blank out of the cooling fan bracket.77