Satechi F1 Smart Monitor Stand with 4 USB Ports and Headphone/Microphone Extension Ports &ndash; Compatible with 21.5-Inch iMac, MacBook Pro, MacBook, Dell, PC, Samsung and more (White) ELEVATE YOUR MONITOR - lifts your monitor for an optimal view while working, typing or checking your email. Includes two sets of aluminum legs (2 or 3.1 inches) for your viewing comfort DURABLE STAND - supports most monitors, desktops, laptops and printers up to 22 lbs. Not recommended for 27 iMacs 4 USB PORTS - adds 4 USB 2.0 ports to your monitor for convenient access to your devices HEADPHONE / MICROPHONE - connect your headset or external microphone to the front of your monitor with its 3.5mm headphone and microphone ports MORE STORAGE - creates desk storage space under your monitor for your keypad, notes or mouse