Lexmark MX910 Series User Manual page 35

Additional printer setup
b
Install the ISP on the bracket.
c
Use the provided thumbscrew for the ISP to attach the ISP to the bracket.
5
Secure the ISP mounting bracket to the controller board cage using the screws.
6
Remove the thumbscrews that attach the hard disk mounting bracket to the hard disk, and then remove the bracket.
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