Dell Professional P1917S 19 inch Square Full HD LED Monitor (Black) with Backlit IPS Panel and Response Time: 4 ms, 60 Hz Refresh Rate

• Display Type - LED-backlit LCD monitor / TFT active matrix
• Diagonal Size - 19" (48.26 cm)
• Panel Type - IPS
• Contrast Ratio - 1000:1 / 4000000:1 (dynamic)
• Vertical / Horizontal Refresh Rate - 56 - 76 Hz and 30 - 81 kHz
• Built-in Devices - USB 3.0 hub
  
• Native Resolution - 1280 x 1024 at 60 Hz
• Aspect Ratio - 5:4
• Brightness - 250 cd/m²
• Response Time - 8 ms (grey-to-grey normal); 4 ms (grey-to-grey fast)
• Backlight Technology - WLED