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Feature Description
Communication
daughter card
(CDC)
R50e and R51e series:
v ThinkPad Integrated 56K Modem
(MDC-2)
R52
series:
v ThinkPad Integrated 56K Modem
(MDC-2)
v ThinkPad Integrated Bluetooth IV with
56K Modem (BMDC-3)
Battery v Li-ion battery (6 cells)
v Li-ion battery (9 cells)
v Ultrabay Enhanced Li Polymer battery, 3
cells (option)
AC adapter v 72-watt type
Preinstalled
operating system
v Windows XP Professional
v Windows XP Home Edition
Product overview
ThinkPad R50e, R51e and R52 Series 53