OSOS X El Capitan: Engineered to take full advantage of your Mac hardware, OS X El Capitan is designed to be as easy to use as it is beautiful to look at. It comes with an amazing collection of apps you ll use and love every day. And it enables your Mac and iOS devices to work wonderfully together.
Power Requirement100 240 V AC, 50 Hz to 60 Hz, Single Phase
USB PortYes (4 x 3.0 USB) (compatible with USB 2.0)
Other Ports2 x Thunderbolt, Dual-link DVI (adapters sold separately)
Web CameraFaceTime HD camera
MouseMagic Mouse 2: The new design of Magic Mouse 2 lets it glide more smoothly across your desk. And since it supports Multi-Touch, you can use simple gestures on its surface to do things such as swipe between web pages and scroll through documents. So if you prefer to use a wireless mouse but want some of the benefits of Multi-Touch, Magic Mouse 2 is a great choice.
TrackpadMagic Trackpad 2: If you prefer using a trackpad, Magic Trackpad 2 gives you the full range of Multi-Touch gestures and introduces Force Touch to the desktop. Sensors underneath the trackpad surface detect subtle differences in the amount of pressure you apply, bringing more functionality to your fingertips and enabling a deeper connection to your content. This new design, along with a lower profile, makes it even more comfortable to use.
KeyboardMagic Keyboard: The redesigned Magic Keyboard comes standard with your iMac. It s wireless and rechargeable (so you won t be replacing batteries), with an ultra-compact, edge-to-edge design that wastes no surface space. It has an improved scissor mechanism, optimised key travel and a lower profile that increase control and comfort. And it pairs immediately with your iMac straight out of the box.
Mic InDual microphones
Included SoftwarePhotos, iMovie, GarageBand, Pages, Numbers, Keynote, Safari, Mail, Messages, FaceTime, Calendar, Notes, App Store, iTunes, iBooks, Maps, Contacts, Reminders
Other Features- Support for extended desktop and video mirroring modes - 3.5mm headphone jack - Headphone/optical digital audio output (mini-jack) - Support for Apple iPhone headset with microphone
Technical Specification of Apple I Mac 21.5 Inch MK442HN/A