Compaq Armada V300 Series Reference Manual page 73

chapter
The two computer bays support standard as well as optional
devices. Some devices can be hot plugged, while others must be
inserted after the computer has been turned off. The following
table is a list of devices supported in all bays, as well as the
computer power state required before inserting the device (see
Chapter 2 for bay locations):
MultiBay
Battery bay
If a diskette drive is inserted in the MultiBay, only the
computer's primary diskette drive will work.
6
CD-ROM drive
DVD drive
LS-120 Drive
Second hard drive
Second battery pack
Primary battery pack
On or Off
On or Off
On or Off
Off
On
On