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Acer - CB281HK 28" LED 4K UHD FreeSync Monitor - Black

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Enjoy Ultra HD content and flexible viewing options with this 28-inch Acer LED monitor. It supports picture-in-picture views for simultaneous multiple screenings and picture-by-picture display with another monitor while maintaining the original 4K video resolution. This Acer LED monitor prevents display lag during fast-paced movie and gaming scenes with its 1ms response time.

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    What's Included

    • Acer CB281HK
    • DVI cable - 5 ft
    • DisplayPort cable - 5 ft

    Ratings & Reviews

    Overall Customer Rating:
    93% of customers would recommend this product to a friend (248 out of 269)


    4K Ultra HD 3840 x 2160 resolution

    Outstanding detail that's ideal for watching high-resolution videos and playing games with settings maxed out.

    1 ms response time

    Delivers ultra-fast performance, minimizing lag and time-to-screen.

    60 Hz refresh rate

    Delivers powerful performance so that you can get the most out of your games and videos.

    28" antiglare LED monitor

    Efficient screen type uses LEDs to provide precise backlighting to pixels.

    FreeSync Technology

    Adaptive synchronization technology that matches the frame rate of the monitor to any compatible AMD graphics card.

    DisplayPort and HDMI inputs

    Allow you to set up DVD players and other AV sources for a clear, high quality audio and video signal.

    170° horizontal and 160° vertical viewing angles

    Allow you to view the screen from a wide range of angles.

    100,000,000:1 dynamic contrast ratio (1,000:1 typical)

    Ensures images are crisp and clear with deep blacks and bright highlights.

    300 cd/m² brightness

    Produces bright images that can clearly be seen even in well-lit rooms.

    Customer rating

    Rating 4.5 out of 5 stars with 269 reviews

    would recommend to a friend



    • Rating: 5 out of 5 stars

      Great Monitor

      • My Best Buy® Elite Plus MemberElite Plus Member

      Bought this because I was looking for a bigger monitor, 27 inches or more. Was looking at the 27 LG in store but didn't like the white stand. Upon further review of this monitor, noticed it was bigger (28 inches) and was 4K. Checked the reviews and decided to give it a shot. After hooking it up, I tested 4K by streaming some 4K demos on my PC. Can hook up PS4, XBOX One or PC via the HDMI cable. It includes three different cables plus power cord. Can wall mount if desired but the stand is awesome. Swivels, raise, lower and tilt. Very nice stand indeed! Sound quality not great, use external speakers for XBOX or PS4. As far as the picture quality, on your PC, use your driver software to adjust the colors. My Geforce 970 looks awesome in both 1080 (after using software controls) and 2160. The presets on the monitor alone do not look quite right to me on 1080 resolution, but I was able to make it look perfect with software on PC. The screen is not glossy, so I don't have any glares. If you like glossy screens, you may be disappointed. I love this monitor, don't care what anyone else says. For the price, it is huge and has a great stand. With the right video card driver software, you can adjust the colors, brightness, contrast easily on your PC for video and photo editing. If you don't have a card that can do 4K, it still looks nice in 1080.

      I would recommend this to a friend

    • Rating: 2 out of 5 stars



      So I was in the market for a new monitor, since my old one had a few dead pixels and was starting to become more of a hassle than it needed to be. I checked around online a little and found this beauty of a monitor, I mean 4k Freesync with 80hz refresh rate and 1 ms response time? For only $260? Too good to be true. Ordered it, had some trouble with shipping but that's not why this review has 2 stars. I received the monitor, tested it a bit, and it looks fantastic. HOWEVER, in the "Key features" section of the product page on Best Buy, it clearly states that the refresh rate is 80 hz. Out of the box it was set to 60, which is normal, but when I went to change it up to 80, there was no option. I had it hooked up to my pc via display port, which is the recommended set up to running smoothly, but still no option to change the refresh rate. Tried different cables, thinking that maybe it was just a fluke, but nope. Still nothing. I took to some forums to see if there was any way to override this, and some said most monitors can be overclocked to about 75 hz, and when I attempted that, the screen just didn't show anything. Just black. Needless to say, was very disappointed in the false facts given on the product page, will be returning within the next day. The monitor itself is decent enough, but is not what was advertised.

      No, I would not recommend this to a friend

      • Brand response


        We are sorry to hear this; we understand you returned the Acer monitor but we would have been more than happy to provide support for you and to find a resolution for you. If in the future you need assistance with an Acer product, feel free to contact support from the info posted at
        Best regards,
        Acer America Acer

    • Rating: 3 out of 5 stars

      Disappointing blacks & contrast


      I bought this because my PS4 Pro looked so great on my 4K TV with HDR, but not so great on my monitor (Destiny 2). There were a lot of small things that set the mood that were simply missing. So I thought I would give this monitor a shot with it's 1 billion colors and 4K resolution. Out of the box it's colors are completely washed out as all settings are set to 50%. I tried tweaking some, to no real help. Blacks were light gray and the contrast I couldn't get it to where it looked right. Pulled out the trusty Spyder 4 and calibrated. It came up with a bright setting of 2, contrast 48 and colors at 93. This significantly helped the picture quality. That being said, the blacks were still gray. With the black test pattern up and brightness set at 2, the monitor at best, was gray. I tried playing further with the contrast setting and found it looked best at the 48 setting. I decided to return the monitor. I know the displays at Best Buy don't have a good signal, but after I returned it, I looked at the display again. What I saw there was the same thing I saw at home, a washed out display. I calibrated the Viewsonic XG2701 monitor (6 bright, 73 contrast, 50 color) and I'm now happy with it. It had a better picture at 1080 than this monitor did at 4K I believe due to the contrast and black issue. For $250, not a bad monitor but not good enough to replace my ViewSonic. FYI, Destiny 2 has a lot of fog in it. Check contrast your settings.

      No, I would not recommend this to a friend

    • Rating: 5 out of 5 stars

      boy did I think I made a mistake

      • My Best Buy® Elite MemberElite Member

      I’m a gamer and with that I build my own PC and research extensity the component’s that go into the computer and the peripherals that connect to it. I purchased two of these monitors and when I got them home, connected and setup with my windows 10 OS I was initially impressed with the performance. Then came the heart ache. I fired up Destiny 2 and immediately noticed it was dark. And, I mean DAAAARRRKKK! I thought I made a mistake. These are LED+LCD. My old 27 inch Acer was lcd. The lumens were specd at 300 per meter so what gives. I was really thinking on packing up the whole mess and head back to Best Buy to return them, then it hit me. GAMMA! Windows 10 turns down the Gamma as a default. BUT, most games have an internal settings. The trick is knowing where to find it. Destiny 2 has a brightness setting. Both WoW and SWTOR has a Gamma setting IF you are in Full Screen mode. If you are like me I like mine in Fullscreen (WINDOWED). So how do you control Gamma in window mode? Use the windows 10 Calibrate Display Color app. Fire it up by typing cali in the search box and it will show up. Once completed the monitors are great and I have no complaints. .

      I would recommend this to a friend

    • Rating: 3 out of 5 stars

      Good for the money.


      This was a great buy on sale. I ordered a similar priced 28" 4K Samsung from the major online retailer, but it arrived with the box and monitor smashed. They didn't pack it properly, and FedEx must have played soccer with the box. Gotta love brick and mortar stores like Best Buy. I found this one the same day on sale. What I didn't like was their 4K monitor selection. There were only two 28" models to chose from. I settled a bit for this one. Pros: -Picture is good. -Adjustable stand is very nice, can adjust up and down, high enough to go portrait mode. It goes high enough to sit over my open 13" MacBook as a second monitor. Cons: -Colors aren't as saturated as other brands. -The speakers are terrible! Seriously, the worst I've ever heard. They sound like a pair of headphones sitting on my desk which are turned all the way up, and that's not an exaggeration! The 2017 MBP speakers blow this out of the water. I'm replacing my 10 year old Samsung TV/monitor with this, and the speakers on that were 100x better. For the sale price, I'm happy with this monitor. Don't consider buying it if you need good built-in speakers.

      I would recommend this to a friend

    • Rating: 4 out of 5 stars

      Good Monitor for the Price, but...

      • Verified PurchaserVerified Purchase
      • My Best Buy® Elite MemberElite Member

      The vertical viewing angles don't offer a clear whole picture and it drives me crazy. Colors and depth are wonderful otherwise, full list below: Pros: - the picture is lovely and vibrant - mostly (see below) - the response time is everything I dreamed of - it's super easy to put together - you can easily adjust the stand pretty much any way you want and it doesn't feel loose at all Cons: - speakers are pretty tinny and just not really quality, but I don't really expect quality speakers out of a monitor anyways - the colors at the top and bottom of the monitor are either dark or washed out respectively, and no amount of adjusting will fix it. I tried using all the settings on the monitor menu, and then I tried all the options on my NVIDIA card settings, nothing changed it at all. It's just a viewing angle issue, and no angle gives it a completely clear picture. Unfortunately I personally can't handle the fade, it drives me nuts, and I'm returning it.

      No, I would not recommend this to a friend

    • Rating: 4 out of 5 stars

      Great Intro 4K Monitor

      • Verified PurchaserVerified Purchase
      • My Best Buy® Elite Plus MemberElite Plus Member

      This is the first 4K monitor that I've owned, so I don't have a great breadth of comparison. I'll focus on what I've learned in the ~8 weeks that I've owned it: * The picture is great! Just make sure you've got a video card that can drive it * The auto-input swapping is good. I routinely have a Mac that I bring home from work and this monitor is able to pick up the switch without problems (at least with my PC off - no gaming while I work!) * The speakers are absolute garbage. Do NOT buy this for the speakers! They're fine for alerts from chat apps or email, but don't expect to use them for watching Netflix or anything. * I've used this for gaming, programming, word processing, browsing the web, on both Mac and Windows and the monitor has been great.

      I would recommend this to a friend

    • Rating: 5 out of 5 stars

      Excellent monitors

      • Verified PurchaserVerified Purchase
      • My Best Buy® MemberMember

      I bought two of these monitors to replace a Hanns-G and a BenQ, both of which were dying. The Hanns lasted severral years. The BenQ only a couple. Intallation was effortless. Finding the right combination of resolution to fill the screen at 150% so these old eyes could read the text was like going to the eye doctor. Is "A" better than "B" and so on. But there were plenty of choices, so younger eyes would go to the most resolution and older ones could find a good compromise. i used 2560x1440 eventually. I have nothing bad to say about these monitors. The fact that they came with different connection cables was a great bonus. I am using DP with an Nvidia Quadro K2200 video card. Oh, a trick to setting it up - place the monitor on a flat surface and attach the stand. Otherwise you will spend many frustrating minutes trying to get it to work.

      I would recommend this to a friend

    Product images, including color, may differ from actual product appearance.