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Manufacturer: Lenovo
Model Name/Number: ThinkPad T520, ThinkPad T520i, ThinkPad W520
Technologies and Bands:
(3G)
UMTS FDD: Band I   Band II   Band IV   Band V   Band VIII  
(2G)
GSM: 850 MHz   900 MHz   1800 MHz   1900 MHz  
Certification DateHardware VersionSoftware Version
2012-01-06ThinkPad HW: Rev 1.0, MC8355 HW P4 ThinkPad SW: Rev 1.0, MC8355 FW 1580
2011-01-28ThinkPad HW: Rev 1.0, MC8355 HW P4 ThinkPad SW: Rev 1.0, MC8355 FW 1575
2011-01-19Rev 1.0Rev 1.0

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