SKU: 12927680217

Apple iMac MRT42LL/A All-in-One Computer - Intel Core i5 8th Gen - 8 GB - 21.5" - Desktop

Sale price$148.21 Regular price$164.68
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Description

Apple iMac MRT42LL/A All-in-One Computer - Intel Core i5 8th Gen - 8 GB - 21.5" - DesktopDiscover the seamless blend of style and performance with the Apple iMac MRT42LL A, a 21. 5 inch all in one desktop designed to elevate everyday tasks and creative workflows. Powered by an 8th generation Intel Core i5 processor and paired with ample memory, this iMac delivers responsive multitasking, crisp visuals, and a polished user experience in a compact, space saving form. Whether youre editing photos, compiling documents, streaming high

Discover the seamless blend of style and performance with the Apple iMac MRT42LL/A, a 21.5-inch all-in-one desktop designed to elevate everyday tasks and creative workflows. Powered by an 8th-generation Intel Core i5 processor and paired with ample memory, this iMac delivers responsive multitasking, crisp visuals, and a polished user experience in a compact, space-saving form. Whether you’re editing photos, compiling documents, streaming high-definition content, or handling light video projects, the MRT42LL/A brings speed, reliability, and Apple’s signature design into one elegant package.

  • High-performance 8th‑Gen Intel Core i5 with 6 cores — The processor delivers solid, consistently smooth performance for everyday productivity, web browsing, photo editing, and multitasking across multiple apps. With a base clock around 3.0 GHz and 6 cores, you’ll experience responsive app launches, rapid file handling, and a comfortable main workspace even when juggling several tasks at once.
  • Vivid 21.5-inch Retina 4K display — The 21.5" Retina 4K panel brings sharp text, crisp images, and rich color for immersive media consumption and precise editing. At this size, you get a comfortable viewing footprint for extended work sessions, with detailed rendering that’s ideal for design, photo touch-ups, and video previews.
  • Smart storage configuration: 32 GB SSD + 1 TB HDD — This configuration pairs a compact 32 GB solid-state drive for snappy boot times and fast loading of essential apps with a roomy 1 TB hard drive for abundant file storage. The result is a balance of speed for your operating system and applications, alongside ample space for photos, documents, music, and video libraries.
  • Dedicated Radeon Pro 560X graphics for creative tasks — The Radeon Pro 560X GPU accelerates graphics workloads and delivers smoother video playback, faster rendering in apps like iMovie and Final Cut Pro, and improved responsiveness when working with rich media projects or graphically demanding software on macOS.
  • Elegant all‑in‑one design with Apple craftsmanship — The MRT42LL/A embodies Apple’s iconic aesthetic: a slim, durable aluminum enclosure that keeps cables minimal and your desk clean. The integrated hardware—display, processor, storage, camera, speakers, and ports—delivers a cohesive user experience with streamlined setup and everyday reliability.

Technical Details of Apple iMac MRT42LL/A

CPU: Intel Core i5-8500, 3.0 GHz, 6-core

RAM: 8 GB

Storage: 32 GB SSD + 1 TB HDD

Graphics: Radeon Pro 560X

Display: 21.5-inch Retina 4K

Model Year: 2019

Form Factor: All-in-One Desktop

Operating System: macOS

how to install Apple iMac MRT42LL/A

To set up your iMac MRT42LL/A, place the computer on a stable, flat surface and connect the power cable. Attach a keyboard and mouse or trackpad, then press the power button to boot. Follow the on-screen macOS Setup Assistant to select your language, region, and accessibility preferences. Sign in with or create an Apple ID to access iCloud, the App Store, and synchronized data across devices. If you’re migrating data from another Mac, use Migration Assistant to move apps, documents, and settings. Ensure you have an active internet connection for system updates and activation. For the dual-storage configuration, install frequently used apps on the SSD and store large media folders on the HDD to optimize performance and capacity. Regularly check for software updates to keep macOS secure and compatible with new features.

Frequently asked questions

  • What display size and resolution does this iMac offer? — It features a 21.5-inch Retina 4K display, delivering high pixel density and clear visuals ideal for work and entertainment.
  • How much memory does it include? — The system comes with 8 GB of RAM, which provides solid performance for everyday tasks and light creative work.
  • What storage configuration is included? — The model combines a 32 GB SSD with a 1 TB HDD, balancing fast booting and responsive app loading with generous storage capacity for files and media.
  • Is the MRT42LL/A suitable for creative apps? — Yes. With Radeon Pro 560X graphics and the Retina display, it supports entry-level video editing, photo editing, and design workflows on macOS.
  • What should I know about upgrading or expanding storage or memory? — Memory on iMac models is fixed at purchase; storage configurations are part of the original build. For precise upgrade options and compatibility, consult Apple’s official specifications for the MRT42LL/A or contact support.
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
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Exchange/Return Notes
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SKU: 12927680217

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4.6 ★★★★★
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Verified Purchase
Robyn Simmons
Fort Morgan, US
★★★★★ 5
Fantastic Mental Stimulation for My Dog!
Color: Higher Level-Navy A
I am absolutely loving the Dog Puzzle Toy! It’s such a great way to keep my dog mentally engaged and entertained. The concept is simple—just put treats into the puzzle slots—and it provides hours of fun as my dog works to figure out how to get to the treats. It’s amazing to see how much focus and problem-solving skills he’s using! The toy is sturdy, and the slots are easy to fill. I love that it’s adjustable, so I can make it a bit more challenging as my dog gets better at it. It’s also made from durable, pet-safe material, which gives me peace of mind knowing it’s not only fun but also safe. My dog seems to really enjoy it, and I can tell that it’s helping with his mental stimulation. It’s a great alternative to traditional chew toys, and I’ve noticed a positive difference in his behavior and energy level. Pros: Great mental stimulation for dogs Easy to use—just add treats Adjustable difficulty level Durable and pet-safe material Keeps dogs entertained for longer periods Cons: None so far! This toy is perfect for keeping my dog entertained while giving his brain a workout. I highly recommend it for anyone looking to challenge their pet in a fun and rewarding way!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 11, 2025
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Verified Purchase
Haley
Dallas, US
★★★★★ 3
Interactive. Triggers more of dogs minds
Color: Higher Level-Navy A
My dog had a bit of a time figuring out how it works but she loves it now. Put lil pieces of bacon in the holes and she finds it all well.
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Reviewed in the United States on May 21, 2026
M
Verified Purchase
Mindhealer
Bozeman, US
★★★★★ 5
Please read!
Color: Higher Level-Navy A
The design is adorable and I love the little bones and paw prints they put on the tabs. They are easy to slide and the colors are bright and admirable. There is different difficulty levels. The yellow circles are more on the easy side. The red ones are a bit more harder if you have a more intelligent dog. The three white tabs in the middle move in a 360 circle, there is one missing so you can slide the red tab in to hide the treats. I use my dog's kibble as treats; the kibble pellets are 1cm in length and 1cm in width. I can fit about 2 pellets in each tab hole, there are 14 small holes which you can hide the treats in total. Cleaning the puzzle It depends if you wash it by hand or put it in the dishwasher. I do both but I prefer the dishwasher because it is a little hard to clean by hand since there is so many nooks and crannies on the toy. Of course, it is dishwasher safe and I recommend putting it in by itself because you don't want to cross-contaminate the dog slobber to be on your dishes. I wouldn't put crushed or wet dog food in it because it could get in the sliding rails and jam it up or get moldy. If you are going to dry the toy, open all the tabs so they are exposed. If you cannot, that's okay. My dog's opinion I have two dogs, a 2-year-old chocolate Labrador named Maggie and a 7-year-old labradoodle named Rufio, Maggie takes about 1 or 2 minutes to finish the puzzle because she is super energetic. Rufio takes 3 or 4 minutes because he is calmer; but sometimes I have to help him just a little bit. It is suitable for all dog ages and I recommend it if your dog (s) are annoying you. They both love it and I give it to them for mental stimulation and as a reward. The bottom has "non-slip pads", but if I'm being honest they actually don't work that well. My dogs just slide it around.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 13, 2025
J
Verified Purchase
JavaJunkie
San Leandro, US
★★★★★ 5
Great design!
Color: Higher Level-Navy A
This Joansan Dog Puzzle Toy is exactly what I was looking for. My little MinPin is a worker and he likes having a job to do. I purchased this to entertain him when rolling his treat ball all over the place isn't practical. This disc has a non slip bottom and it's actually fairly heavy. It doesn't slide easily. So my little worker usually ends up picking it up and transporting it to different locations throughout the house. Obviously, individual results will vary, depending on size, personality, and breed of the dog using it, but it's been great for my lil guy. He gets a little physical and mental exercise. It's sturdy enough to withstand his scratching and chewing. My big dog likes it too. The size is perfect for food oriented cats too. My cat is too lazy to work for his food though. So he wasn't interested in it.
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Reviewed in the United States on November 6, 2025
T
Verified Purchase
Thomas K.
Alexandria, US
★★★★★ 4
This feeder will surely make your dogs work for their food.
Color: Higher Level-Navy A
I recently tried this slow feeder (I purchased 2 feeders) for my two Corgis (25 & 30 lbs.). Overall, it’s a well-constructed product and definitely slows down eating as intended. The design encourages dogs to work for their food, which helps with digestion and keeps them engaged. That said, there are a couple of challenges I noticed. The kibble sometimes gets jammed in the sliding doors, which can make it harder for my pups to access the food. Also, the feeder doesn’t hold a large amount of kibble—I found myself needing to refill it 2–3 times per meal to accommodate both of my dogs. Finally, my pups had a tougher time reaching the kibble in the middle ring, which caused a bit of frustration. Despite these issues, it’s sturdy, safe, and does the job of slowing down fast eaters. I think it could work especially well for smaller dogs or those who eat less at mealtime.
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Reviewed in the United States on September 27, 2025

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