Yes, the 2015 MacBook Air supports 4K displays at 60Hz | Ars Technica
13-inch MacBook Air (early 2015) review | Macworld
Apple MacBook Air 13 (2015) Notebook Review - NotebookCheck.net Reviews
2015 MacBook Air vs 2014 MacBook Air: Key Differences
Apple MacBook (12-inch, 2015) review: A minimalist MacBook that proves less can be more - CNET
2015 MacBook Air Can Drive 4K Displays at 60Hz - MacRumors
Apple MacBook Air 11 (Early 2015) Notebook Review - NotebookCheck.net Reviews
LG UltraFine 4K Display - Apple
Amazon.com: Early 2015Apple MacBook Air with 1.6GHz Intel Core i5 (11.6 inch, 128 GB SSD, 4 GB RAM) Silver (Renewed) : Electronics
MacBook Air 11in (2015) review | Stuff
![4K]Speed Test Macbook Air 2015 vs Macbook Pro Retina 2012 - YouTube](https://i.ytimg.com/vi/i7RW2Dbuvok/maxresdefault.jpg "4K]Speed Test Macbook Air 2015 vs Macbook Pro Retina 2012 - YouTube")
4K]Speed Test Macbook Air 2015 vs Macbook Pro Retina 2012 - YouTube
Amazon.com: Satechi Aluminum Type-C HDMI Adapter 4K (60Hz) - Compatible with 2020 MacBook Pro, 2020 MacBook Air, 2020 iPad Pro and More (Silver) : Electronics
Anker USB C Hub Adapter, 7-in-1 USB C Adapter, with 4K HDMI, Power Delivery for MacBook Pro, Pixelbook, XPS - Walmart.com
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Amazon.com: nonda USB C to HDMI Adapter (4K@60Hz), USB Type-C to HDMI Adapter [Thunderbolt 3] for MacBook Pro 2017/2016, MacBook Air/iPad Pro 2016/2015, Samsung Galaxy Note S8, Chromebook Pixel : Electronics
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Amazon.com: Silkland Mini DisplayPort to DisplayPort Cable 6.6ft, [4K@60Hz, 2K@165Hz 144Hz, 1080P@240Hz] Mini DP/Thunderbolt 2 to DP Cable Compatible with iMac 2015, MacBook Pro/Air 2015, Surface Pro 6 and More : Electronics
Apple MacBook Pro (15-inch, 2015) review: Old-school MacBook Pro is good for the dongle averse - CNET
MacBook Air 11in (2015) review | Stuff
Apple MacBook Air (13-inch, 2015) review: Apple's most affordable MacBook - CNET
9to5Toys Last Call: MacBook Air (2015) $99 off, iPhone 6 Plus Game Boy case, 4K AirPlay A/V Receiver $200, more - 9to5Mac
Apple MacBook Air (13-inch, 2015) review: Apple's most affordable MacBook - CNET
Apple MacBook Pro (15-inch, 2015) review: Old-school MacBook Pro is good for the dongle averse - CNET
Apple MacBook 2015 review | Stuff
Yes, the 2015 MacBook Air supports 4K displays at 60Hz | Ars Technica
13-inch MacBook Air (early 2015) review | Macworld
MacBook Air (13-inch, Early 2015) - Technical Specifications
