
Precision 3640 Tower Service Manual
Installing the optional IO card
Steps
- To remove the metal bracket as shown below, insert a flathead screwdriver in the hole of the bracket [1], push the bracket to release the bracket [2], and then lift the bracket out from the system.

- Insert the IO card into its slot from the inside of your computer [1] and replace the two M3X3 screws to secure the IO card to the system [2].
- Connect the IO card cable to the connector on the system board [3].

- Close the PSU hinge.
- Install the Cover.
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