USB Portsl 1 upstream - rearl 4 downstream - 2 on rear; 2 on left sideNOTE: USB 2.0 functionality requires a USB 2.0-capable computerNOTE: The monitor's USB interface works only when the monitor is on or in power save mode. If you turn off the monitor and then turn it on, the attached peripherals may take a feseconds to resume normal functionality.Plug and Play CapabilityYou can install the monitor in any Plug and Play-compatible system. The monitor automatically provides the computer system with its Extended Display Identification Data (EDID) using DisChannel (DDC) protocols so the system can configure itself and optimize the monitor settings. Most monitor installations are automatic; you can select different settings if desired. For moinformation about changing the monitor settings, see Operating the Monitor.Flat Panel SpecificationsScreen type Active matrix - TFT LCDScreen dimensions 22 inches (22-inch viewable image size)Preset display area:Horizontal 473.76 mm (18.7 inches)Vertical 296.1 mm (11.7 inches)Pixel pitch 0.282 mmViewing angle 160° (vertical) typ, 160° (horizontal) typLuminance output 300 CD/m ²(typ)Contrast ratio 1000 to 1 (typ)Faceplate coating Antiglare with hard-coating 3HBacklight CCFL (4) edgelight systemResponse Time 5ms typicalResolution SpecificationsVideo Supported ModesHorizontal scan range 30 kHz to 83 kHzVertical scan range 56 Hz to 76 HzOptimal preset resolution 1680 x 1050 at 60 HzHighest preset resolution 1680 x 1050 at 75 HzVideo display capabilities (DVI playback) 480i/480p/576i/576p/720p/1080i/1080p (Support HDCP)Preset Display ModesDisplay Mode Horizontal Frequency(kHz)Vertical Frequency (Hz) Pixel Clock (MHz) Sync Polarity(Horizontal/Vertical)VESA, 720 x 400 31.5 70.0 28.3 -/+VESA, 640 x 480 31.5 60.0 25.2 -/-VESA, 640 x 480 37.5 75.0 31.5 -/-VESA, 800 x 600 37.9 60.0 40.0 +/+VESA, 800 x 600 46.9 75.0 49.5 +/+VESA, 1024 x 768 48.4 60.0 65.0 -/-VESA, 1024 x 768 60.0 75.0 78.8 +/+