Abstract: A security device for a HDMI connector having a HDMI connector head provided on an electronic device having a HDMI socket. The security device includes a locking device including a locking head and a plurality of locker arms extended from two sides of the locking head respectively to define a locker channel for detachably receiving the HDMI connector head. Each of the locker arms has a plurality of engaging teeth formed therealong, wherein the locking device is arranged to operate between a locking mode and a releasing mode, wherein in the locking mode, the locker arms are inwardly pressed to bias against the HDMI connector head when the HDMI connector is plugged into the HDMI socket, wherein in the releasing mode, the locker arms are relieved from the pressing force so as to allow the HDMI connector head to be freely detached from the HDMI socket.

Abstract: A surveillance monitor includes a monitor assembly and a control hub. The monitor assembly includes at least one display unit for displaying a predetermined image. The control hub includes a control housing and a control module. The control housing is positioned at a distance from the monitor assembly. The control module is electrically communicated with the monitor assembly, wherein the control module comprises a central processing unit and a control panel provided on the control housing, wherein the central processing unit is arranged to process video signals, and transmit the processed video signal to the monitor assembly for generating a corresponding video image on the monitor assembly, so that a user is able to control video display on the monitor assembly by conveniently controlling the control module which is distant away from the monitor assembly.