Lenovo 20E3, Hardware Maintenance Manual, Page: 59 / 60

Appendix B. Abbreviation and acronym table
The following table lists all abbreviations and acronyms which might be used in this manual.
Abbreviation or
acronym Full Term
3G third generation of mobile telecommunications technology
BGA Ball Grid Array
BIOS basic input/output system
CMOS complementary metal-oxide semiconductor
COA Certificate of Authentication
CRC cyclic redundancy check
CRT
cathode ray tube
CRU customer-replaceable unit
CTO Configure To Order
EAIA Enhanced Asset Information Area
ECA Engineering Change Announcements
EEPROM Electrically Erasable Programmable Read-Only Memory
EFI Extensible Firmware Interface
EPO emergency power-off
ESD
electrostatic discharge
EU European Union
FCC Federal Communications Commission
FRU Field Replaceable Unit
GAV General Announce Variant
GPU graphics processing unit
HDD hard disk drive
HDMI high-definition multimedia interface
ICs
integrated circuits
ICCID integrate circuit card identity
ISO International Standardization Organization
LAN local area network
LCD liquid crystal display
MAC media access control
MT machine type
MTM machine type and model
PC personal computer
PCH Platform Controller Hub
POST
power-on self-test
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