Lenovo ThinkPad X230 Tablet - Manual (Page 58)

Major FRUs and CRUs
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No. FRU description Self-service CRU Optional-service CRU
1 LCD unit No No
2 Keyboard bezel No No
3 Tablet Digitizer Pen Yes No
4 PCI Express Mini Card for wireless WAN (on some
models) No Yes
4 mSATA solid-state drive (on some models) No No
5 PCI Express Mini Card for wireless LAN/WiMAX No Yes
6 Backup battery No Yes
7 Bluetooth daughter card No No
52 Hardware Maintenance Manual