Abbreviation Term PC personal computer PCH Platform Controller Hub POST power-on self-test RAM random-access memory RF radio frequency RFID radio-frequency identification RI ring indicator RJ registered jack SATA Serial Advanced Technology Attachment SIM subscriber identity module SVP supervisor password TFTs thin-film transistors UEFI Unified Extensible Firmware Interface USB Universal Serial Bus UUID universally unique identifier VGA video graphics array VRAM video random-access memory WAN wide area network WQHD wide quad high definition 106 T480 Hardware Maintenance Manual