Lenovo IdeaPad U550 User Manual page 138

Appendix F. Features and Specifications
I/O Ports
USB
Communication
Audio
Video
Memory card slot
Others
Kensington slot
124
USB 2.0 ports x 3
RJ-45 port
Headphone/Mic-In Jack
D-sub port/HDMI port
4 in 1 slot x 1 (MMC/ SD/ MS/ MS PRO)
Yes