For this week's giveaway, we've teamed up with Astro to give MacRumors readers a chance to win a Luna Display adapter, which is a handy little dongle that turns an iPad or a Mac into a secondary display for a main Mac.

The Luna Display plugs into your Mac using USB-C for modern Macs or Mini DisplayPort for older Macs, and then using the Luna Display Software, it connects an iPad or another Mac to your primary Mac using Wi-Fi.

luna display mac to mac mode
Once connected, the Luna Display extends your Mac's display to the secondary Mac or the iPad, adding second screen functionality.

The $80 Luna Display used to be limited to the iPad, but following Apple's release of Sidecar with iOS 13 and macOS Catalina, Luna Display functionality was expanded to encompass Macs as well. With Mac-to-Mac support, the Luna Display adapter offers functionality that Apple's Sidecar isn't able to provide, making it a great alternative if you want to use an older Mac as an extra display.

luna display macbook
To use Mac-to-Mac mode, the primary Mac needs to be running OS X El Capitan or later, while the secondary Mac needs to be running OS X Mountain Lion or later, which means this can work with much older machines.

lunadisplay4
For optimal performance, the main Mac should be a 2012 MacBook Air or later, a 2012 MacBook Pro or later, a 2012 Mac mini or later, a 2012 iMac or later, or a 2013 Mac Pro or later.

lunadisplay2
When used with a Mac in Mac-to-Mac mode, Luna Display offers full keyboard, trackpad, and mouse support on both of the Macs. More info on Mac-to-Mac mode can be found on the Luna Display website.

lunadisplaymactomac
Luna Display works with almost all modern iPads as well, with expanded support over what Apple's Sidecar offers. You can use it with the iPad 2 or later, all iPad mini models, all iPad Pro models, and all iPad Air models, with iOS 9.1 or later as the only requirement. Performance is faster on newer iPads, but older models work just fine.

lunadisplay3
The Luna Display can be purchased from the Luna website, and we also have five of them to give away to MacRumors readers. To enter to win our giveaway, use the Gleam.io widget below and enter an email address. Email addresses will be used solely for contact purposes to reach the winners and send the prizes. You can earn additional entries by subscribing to our weekly newsletter, subscribing to our YouTube channel, following us on Twitter, following us on Instagram, or visiting the MacRumors Facebook page.

Due to the complexities of international laws regarding giveaways, only U.S. residents who are 18 years or older and Canadian residents (excluding Quebec) who have reached the age of majority in their province or territory are eligible to enter. To offer feedback or get more information on the giveaway restrictions, please refer to our Site Feedback section, as that is where discussion of the rules will be redirected.

The contest will run from today (December 27) at 11:00 a.m. Pacific Time through 11:00 a.m. Pacific Time on January 3. The winners will be chosen randomly on January 3 and will be contacted by email. The winners will have 48 hours to respond and provide a shipping address before new winners are chosen.

Top Rated Comments

Gasu E. Avatar
70 months ago

Being an alien, l won't be entering. Besides, I've already got one of each style, and can confirm they're great!
Resident aliens are eligible. Eligibility is based on where you reside, not citizenship.
Score: 1 Votes (Like | Disagree)

Popular Stories

AirPods Pro 3 Mock Feature

AirPods Pro 3 Just Months Away – Here's What We Know

Friday April 18, 2025 5:16 am PDT by
Despite being more than two years old, Apple's AirPods Pro 2 still dominate the premium wireless‑earbud space, thanks to a potent mix of top‑tier audio, class‑leading noise cancellation, and Apple's habit of delivering major new features through software updates. With AirPods Pro 3 widely expected to arrive in 2025, prospective buyers now face a familiar dilemma: snap up the proven...
iphone 17 air dummy unbox therapy

iPhone 17 Air's Extreme Thinness Demoed in New Video

Tuesday April 22, 2025 10:22 am PDT by
Apple plans to release an all-new super thin iPhone this year, debuting it alongside the iPhone 17, iPhone 17 Pro, and iPhone 17 Pro Max. We've seen pictures of dummy models, cases, and renders with the design, but Lewis Hilsenteger of Unbox Therapy today showed off newer dummy models that give us a better idea of just how thin the "iPhone 17 Air" will be. The iPhone 17 Air is expected to be ...
iphone 17 dummies sonny dickson

iPhone 17 Air Almost as Thin as Its Buttons, New Images Show

Thursday April 24, 2025 2:14 am PDT by
If you missed the video showing dummy models of Apple's all-new super thin iPhone 17 Air that's expected later this year, Sonny Dickson this morning shared some further images of the device in close alignment with the other dummy models in the iPhone 17 lineup, indicating just how thin it is likely to be in comparison. The iPhone 17 Air is expected to be around 5.5mm thick – with a thicker ...
ipad air windows 11 arm

M2 iPad Air Runs Windows 11 ARM via Emulation, Thanks to EU Rules

Tuesday April 22, 2025 5:01 am PDT by
A developer has demonstrated Windows 11 ARM running on an M2 iPad Air using emulation, which has become much easier since the EU's Digital Markets Act (DMA) regulations came into effect. As spotted by Windows Latest, NTDev shared an instance of the emulation on social media and posted a video on YouTube (embedded below) demonstrating it in action. The achievement relies on new EU regulatory...
iphone 16 pro models 1

17 Reasons to Wait for the iPhone 17

Thursday April 17, 2025 4:12 am PDT by
Apple's iPhone development roadmap runs several years into the future and the company is continually working with suppliers on several successive iPhone models simultaneously, which is why we often get rumored features months ahead of launch. The iPhone 17 series is no different, and we already have a good idea of what to expect from Apple's 2025 smartphone lineup. If you skipped the iPhone...
iOS 18

iOS 18.5 Includes Only a Few Changes So Far

Monday April 21, 2025 11:00 am PDT by
Apple seeded the third beta of iOS 18.5 to developers today, and so far the software update includes only a few minor changes. The changes are in the Mail and Settings apps. In the Mail app, you can now easily turn off contact photos directly within the app, by tapping on the circle with three dots in the top-right corner. In the Settings app, AppleCare+ coverage information is more...
iPhone 17 Pro Blue Feature Tighter Crop

iPhone 17 Pro Launching Later This Year With These 13 New Features

Wednesday April 23, 2025 8:31 am PDT by
While the iPhone 17 Pro and iPhone 17 Pro Max are not expected to launch until September, there are already plenty of rumors about the devices. Below, we recap key changes rumored for the iPhone 17 Pro models as of April 2025: Aluminum frame: iPhone 17 Pro models are rumored to have an aluminum frame, whereas the iPhone 15 Pro and iPhone 16 Pro models have a titanium frame, and the iPhone ...