Dell Dimension 3000 - Manual (Page 15)

1. Press in the two insert tabs.
2. Push out the front-panel insert.
Reattaching the Front Panel
1. Reattach the front panel to the side hinges.
2. Rotate the front panel until it snaps onto the front of the computer.
Drives
Your computer supports a combination of these devices:
l Up to two hard drives
l One optional floppy
l Up to two CD or DVD drives
General Installation Guidelines
Connect IDE hard drives to the system board connector labeled PRI IDE. Connect CD/DVD drives to the connector labeled J6J1.
When you connect two IDE devices to a single IDE interface cable and configure them for the cable select setting, the device attached to the last connector on
the interface cable is primary or the boot device (drive 0), and the device attached to the middle connector on the interface cable is the secondary device
(drive 1). See the drive documentation in your upgrade kit for information on configuring devices for the cable select setting.