Lenovo IdeaPad U150 - Manual (Page 19)

Chapter 1. Getting to know your computer
5
AC power
adapter jack Connect the AC adapter here.
Note: For details, see “Using AC adapter and battery” on page 12.
Kensington slot Attach a security lock (not supplied) here.
Note: For details, see “Attaching a security lock (not supplied)” on page 24.