HP Compaq Elite 8300 Series Reference Manual page 82

b. If you are removing a media card reader, disconnect the USB cable from the system board.
Figure 3-18
7. 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).
Figure 3-19
74 Chapter 3 Microtower (MT) Hardware Upgrades
Disconnecting the Media Card Reader USB Cable
Removing the Drives