Table 6. Major FRUs (continued) No. FRU descriptions Self-service CRU Optional-service CRU 6 Fingerprint-reader bracket (on some models) No No 7 Fingerprint-reader card (on some models) No No 8 Wireless-LAN/Bluetooth card No Yes 9 Wireless-WAN card/M.2 solid-state drive (on some No Yes models) 10 Hard disk drive and hard disk drive bracket Yes No 11 M.2 solid-state drive and M.2 solid-state drive adapter (on Yes No some models) 12 Internal storage drive cable Yes No 13 RJ45 bracket No No 14 Removable battery Yes No 15 Nano-SIM card (on some models) Yes No 16 Base cover assembly Yes No 17 Built-in battery No No 18 Speaker assembly No No 19 Thermal fan assembly No No 20 System board No No 21 Coin-cell battery Yes No 22 Memory modules No Yes 23 Smart card reader and cable (on some models) No No 24 NFC antenna (on some models) No No 25 NFC module (on some models) No No 26 NFC cable (on some models) No No 27 I/O bracket No No 28 Keyboard No Yes 29 TrackPoint cap Yes No a Miscellaneous parts kits No No b Power cord Yes No c ac power adapter Yes No * d Lenovo factory recovery USB key Yes No 52 T480 Hardware Maintenance Manual