Back ViewSide View3 OSD Menu/Select4 Brightness & Contrast/Down (-)5 Auto-adjust/Up (+)6 Power button (with power light indicator)Back view Back View with monitor standLabel Description Use1 VESA mounting holes (100mm)(Behind attached base plate)To mount the monitor.2 Security lock slot To help secure your monitor.3 Barcode serial number label To contact Dell for technical support.4 Dell Soundbar mounting brackets (2) To attach the optional Dell Soundbar.5 Regulatory rating label Lists the regulatory approvals.6 Service tag label Refer to this label if you need to contact Dell fortechnical support.7 Cable holder Help organize cables by placing them in the holder.Left view Right viewLabel Description1 Card reader: for details, see Card Reader Specifications.2 USB downstream ports.NOTE: To use the USB connectors on your monitor, connect the USB cable to your computer and the USB upstream connector to your monitor.