Dell Precision T3400 (Late 2007) - Manual (Page 233)

Adding and Replacing Parts
233
Installing an Optical Drive (Tower Computer)
NOTICE:
In a tower configuration with 4 hard drives, there can only be one optical
drive which must be installed in the upper 5.25-inch drive bay. In this case, the 3rd
hard drive will occupy the upper 3.5-inch drive bay. The fourth hard drive will
occupy the lower 5.25-inch drive bay.
1 Follow the procedures in "Before You Begin" on page 143.
2 Remove the computer cover (see "Removing the Computer Cover" on
page 145).
3 Remove the front panel (see "Removing the Front Panel" on page 154).
1 sliding-plate lever 2 CD/DVD drive
1
2