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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:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.5 ★★★★★
Based on 16 reviews
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Product Reviews
★★★★★ 5
Works when working outside and heavy activities
Style: SPF 50, Size: 8 Fl Oz (Pack of 1)
I use it as an Amazon delivery driver, and it works in the heat and sweat is no issue it does last for 2 hours. Reapplying it is extremely easy, no burns or sun damage to my skin. I can tell you it works cause I’m recovering from skin cancer and it works no problems or anything.
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Reviewed in the United States on May 19, 2026
★★★★★ 3
Just ok - too thick to apply evenly
Style: SPF 50, Size: 8 Fl Oz (Pack of 1)
Just ok - very thick, so difficult to apply evenly. I use this for outdoor cycling and it works, but it's so thick that it tends to clump instead of smoothly covering the skin.
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Reviewed in the United States on April 16, 2026
★★★★★ 5
Favorite sunscreen
Style: SPF 50, Size: 8 Fl Oz (Pack of 1)
Doesn't go on greasy. Doesn't stink. Don't get sunburnt wearing it.
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Reviewed in the United States on May 6, 2026
★★★★★ 5
Best Moisturizer & Clears ECZEMA FAST! TIPS & BONUS USES
Size: 11 Ounce (Pack of 1)
After wasting money on many supermarket and expensive brands, this is the only one that really works!
I don't have eczema, but another friend does, who first told me about this product.
I do have dry skin, though, whenever I over wash my hands due to chores, repairs or taking care of family, and the dry indoor heat or coldness of winter weather.
My friend with eczema swears by this. She's tried other brands and even prescriptions, which have side effects (steroids thin the skin and is bad for your immunity).
When her skin had cracks or is itchy, she applies it, and it heals up within a few days.
She uses it also as maintenance daily, to prevent future outbreaks or skin cracking.
There's the regular "Aveeno Eczema Therapy" in a tube, but it stings at first if you have any cracks in the skin, which subsides after a few minutes, but it works faster with sealing up cracks.
I love this product because it's very rich, but not too greasy.
It doesn't sting if you have skin cracks, and is gentler and still works well, but it takes a little bit longer.
It's even more effective than the regular "Aveeno Baby Eczema Care" creme in a tube.
I prefer jars because there's always some product left in a tube.
You can't squeeze out what's left at the bottom, and have to cut the tube apart to get at it.
AMAZON HAS THE BEST PRICE, that I've seen online or off.
It's also available in the Baby Section only at stores like supermarkets, pharmacies, etc., but this is the lowest price.
SUBSCRIBE, and you can save even more.
DO NOT BUY ANY GENERICS! They don't work!
I've tried buying them, since it looked like they had the same ingredients, and costs less,
but they are simply not efficacious.
USE WATER TO KEEP MOISTURE IN:
Surprisingly enough, it's not the moisturizer per se that keeps your skin hydrated, it's water.
For example, think of a grape (full, plump with water, juicy), versus a prune (a dried out grape).
Moisturizer provides a physical barrier to keep your skin hydrated.
Of course, a moisturizer's ingredients can also make it a superior or inferior product.
The Aveeno Eczema line has colloidal oatmeal, which is soothing, and healing to the skin.
HOW TO USE WATER WITH MOISTURIZER:
Wet the application areas with water first (I run my hands lightly under the tap), so the product will absorb faster (water hydrates when mixed with moisturizer), and it won't be greasy.
Your skin will feel non-greasy, and not wet within a few minutes.
Use a paper towel or tissues to lightly wipe off the excess, and you can use your hands right away.
I find that this method keeps my skin hydrated more effectively and longer.
YOU'LL USE LESS CREAM WITH WATER:
I use only a tablespoon size, and spread it all over my hands, and along my forearms and elbows.
Water thins and spreads out the cream more easily.
You can use it on DRY, CRACKED FEET, too.
Apply it throughout the day after you wash your hands and before bed, and you'll never get dry skin or eczema outbreaks again! (Per me and my circle of friends).
BUY SEVERAL JARS, and scatter around them the house, like the bathrooms, kitchen, work areas, etc.
BONUS USES:
1. INSECT BITES:
A friend reported that it even works in a pinch to help alleviate bug bites that she's gotten (fleas from animal rescue, mosquitoes, etc).
Wash the area or use an alcoholic sanitizer or baby wipes to clean the bite area first.
Then spread on Aveeno, if you don't have an antihistamine topical product handy.
ALOE VERA GEL FROM THE PLANT also has miraculous healing powers with insect bites, burns,
skin rashes, etc.
You just cut a small piece at an angle, open it up with scissors along the leaf's seam, and apply the gel.
You can wrap a bandage or strip of clean cloth lightly over the area to keep the gel in place, if you want.
The cut plant area will close by itself within a day. Aloe vera is sold cheap at supermarkets, nurseries, etc.,
at under $10.
The gel feels cool and soothing to the skin. The plant is superior to any packaged product.
DO NOT SCRATCH THE ITCH!
IF YOU IGNORE IT, IT'LL DISAPPEAR by itself within a few hours.
Trust me, it really works with mosquito bites. I used to itch for days, until I stopped scratching it.
Distract yourself by watching tv, reading or using your cell to ignore the itch, and just lightly apply
your best anti-itch remedy (DO NOT RUB or you'll stimulate the histamines from the bite).
Anytime that you're tempted to scratch, apply your remedy instead.
THE BEST THINGS TO STOP ITCHING FAST (In order of effectiveness) are:
1) Anti-histamine topical product
2) Aloe vera gel from the plant (also heals the skin)
3) Aveeno creme (also heals the skin)
4) Alcoholic rub
2. SKIN RASHES:
A friend of mine said she was by herself with the baby one day, stuck with no car and husband away, when the diaper creme had run out in the evening.
She applied Aveeno several times, and the rash disappeared the next morning.
Another friend used Aveeno for a strange rash that showed up on her arm when she accidentally brushed against some plants when hiking, and it disappeared within a few hours. She washed the area first, then applied the cream.
Of course, it's best to use a product designed for rashes, especially for babies.
And get any mysterious rash checked out by a doctor.
Btw, I don't get compensated for any of my reviews.
I wanted to give a recommendation for a fantastic moisturizer that I've been using for several years.
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Reviewed in the United States on March 24, 2022
★★★★★ 5
Must have for travel - TSA approved size
Size: 1 Ounce (Pack of 1)
As an adult who has dealt with eczema on and off for years, I originally bought Aveeno Baby Eczema Therapy Nighttime Moisturizing Balm for travel, but it has honestly become a staple in my routine.
First, the texture is rich and balm-like, yet it does not feel greasy or heavy on the skin. It melts in nicely and creates a protective barrier that actually lasts overnight. I use it on dry patches around my hands, elbows, and sometimes on irritated areas during flare-ups. By morning, the redness and itching feel noticeably calmer.
I really appreciate that it contains colloidal oatmeal and ceramide. The oatmeal gives almost instant soothing relief when my skin feels inflamed, and the ceramide helps lock in moisture so my skin does not dry out again within a few hours. It is fragrance-free, which is a must for my sensitive skin. No stinging, no strong scent, and no irritation.
Even though it is marketed for babies, it works just as well for adult eczema. The 1 oz travel size is perfect for keeping in a purse or carry-on, especially during colder months when dry air makes everything worse.
If you are an adult with mild to moderate eczema or stubborn dry patches, this is absolutely worth trying. It is a small container, but a little goes a long way. I will definitely be repurchasing, and next time I will likely go for the full size.
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Reviewed in the United States on March 4, 2026