Lenovo ThinkPad 770E-ED TP 770X User's Reference that shipped with the system - Page 111

the secondary battery inserted in the UltraBay II and if, You might have this situation if you

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If you hot or warm swap the DVD-ROM drive or CD-ROM drive, make sure the drive has stopped rotating. Replacing an UltraBay II Device Other IDE devices: - Hard disk drive: You cannot use the hot and warm swap functions. - CD-ROM drive and DVD-ROM drive: You cannot use the hot and warm swap functions in 2-channel IDE mode. Refer to the table on page 89. Battery pack: Do not hot swap a secondary battery from the UltraBay II when the system is working under the secondary battery power. The power might go off. You might have this situation if you have the secondary battery inserted in the UltraBay II and if: - The AC Adapter is not connected and there is no primary battery. - The AC Adapter is not connected and the primary battery power is low. To see whether your computer is running under the secondary battery power, see the battery status indicator on the indicator panel. Chapter 2. Extending the Features of Your Computer 97

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Replacing an UltraBay II Device
If you hot or warm swap the
DVD-ROM drive or CD-ROM
drive, make sure the drive has
stopped rotating.
Other IDE devices
:
–
Hard disk drive
:
You cannot use the hot and warm swap functions.
–
CD-ROM drive and DVD-ROM drive
:
You cannot use the hot and warm swap functions in
2-channel IDE mode.
Refer to the table on page 89.
Battery pack
:
Do not hot swap a secondary battery from the UltraBay II when
the system is working under the secondary battery power.
The
power might go off.
You might have this situation if you have
the secondary battery inserted in the UltraBay II and if:
–
The AC Adapter is not connected and there is no primary
battery.
–
The AC Adapter is not connected and the primary battery
power is low.
To see whether your computer is running under the secondary
battery power, see the battery status indicator on the indicator
panel.
Chapter 2.
Extending the Features of Your Computer
97