DVR User’s Manual66Appendix C: USB Mouse OperationUsers can use an USB mouse to operate the DVR. To use the USB mouse, please readthrough the following descriptions.Plug in an USB mouse to any USB port of the DVR. Move the USB mouse, and the cursorshould appear. Move the cursor to the top-left of the screen, and the functional icons willbe displayed, as shown below.The description of the 8 functional icons on the upper row are listed as the below. They aresimilar to the function keys on the front panel.1 Menu 5 Call2 Mode 6 Play3 SEQ 7 Pause4 Zoom 8 SearchClick on the first 3 icons on the lower row to display viewing modes 2x2, 3x3, and 4x4. Clickon “P” to display the previous viewing mode. Click on “S” to switch monitor control to thesecond main VGA monitor.Clicking the left button of the USB mouse functions thesame as pressing the “ENTER” key on the front panel of theDVR. Clicking the right button of the USB mouse functionsthe same as pressing the “ESC” key on the front panel ofthe DVR. The scroll wheel is used to change values. Forexample, if users want to change dome camera ID, enterthe OSD setup menu and go to the following path: Æ Æ Left click on and scroll the wheel up or down, the ID number will change as thescroll wheel moves. Stop moving the scroll wheel when the preferred ID number appears,then left click on the and the ID number will be changed.