HP 5850 - Deskjet Color Inkjet Printer Reference Manual page 93

c. If you are removing a media card reader, disconnect the USB cable from the system board.
5. A latch drive bracket with release tabs secures the drives in the drive bay. Lift the release tab on
the latch drive bracket (1) for the drive you want to remove, then slide the drive from its drive
bay (2).
6. Remove the four guide screws (two on each side) from the old drive. You will need these screws
to install a new drive.
Drives 81