Lenovo K23 Notebook - Manual (Page 140)

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Appendix F. Features and specifications
I/O Ports
USB USB 2.0 port x 2
eSATA/USB combo port
Communication RJ-45 port
Audio Headphone/Mic-In Jack
Video D-sub port
Memory card slot 6 in 1 slot x 1 (MMC/SD/SDHC/MS/MS-PRO/xD)
ExpressCard slot Only use the ExpressCard/34 devices
Others
Kensington slot Yes