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34" Class 21:9 UltraWide® QHD IPS Curved LED Monitor (34" Diagonal)
The 3440 X 1440 UltraWide QHD display offers amazingly sharp picture quality¹. Its pixel area is about 1.8 times larger than an UltraWide Full HD 21:9 monitor, and about 2.4 times larger than a Full HD 16:9 monitor. It provides an efficient environment in using Microsoft Office programs showing 47 columns and 63 rows in excel.
sRGB Over 99%
With over 99% coverage of the sRGB spectrum this LG monitor is a great solution for professional photographers, graphic designers or anyone looking for highly accurate color².
USB 3.0 Quick Charge
Save time when you power up the battery of a connected device using USB 3.0 Quick Charge. Once enabled, this convenient feature allows a phone or other mobile device to charge up to four times faster than regular USB 3.0.
On-Screen Control puts a host of essential monitor settings into a handy window for quick, easy access. Volume, brightness, picture mode presets, Screen Split 2.0 and Dual Controller and more can now be adjusted with just a few clicks of the mouse, instead of hard buttons on the monitor.
Software download required to enable OnScreen Control. For download details, visit LGUSA.com/OnScreenControlSupport
Screen Split 2.0
Customize your monitor layout for multitasking with the latest version of LG Screen Split. Resize and display multiple windows at once, with 14 options including four different picture-in-picture (PIP) choices.
LG's 21:9 UltraWide monitors with FreeSync³ technology eliminate the tearing and stuttering that have plagued gaming enthusiasts for years.
Set your game mode optimal gaming conditions. There are 3 gamer modes, 2 First-Person-Shooter modes and even and RTS pre-set mode so you can choose the best mode for you.
Height & Tilt Adjustable Stand
Select LG monitors are easy to put together with a simple press-and-click display-to-base attachment. The monitors provide comfortable viewing with versatile screen tilt/height adjustments.
32.2" x 17.6" x 9.9"(Down)/32.2" x 22.4" x 9.9" (Up)
Without Stand (WxHxD)
32.2" x 14.2" x 3.5"
Shipping Dimensions (WxHxD)
38.5" x 19.9" x 8.1"
With Stand Weight
Smart Energy Saving
In Screen Split
PBP (Picture by Picture)
Six Axis Control
Response Time Control
AMD FreeSync™ Technology
Yes (DP 48~75Hz)
My Display Preset (in OSC)
OnScreen Control (OSC)
Dual EDID (H/W)
Wide, Original, Cinema 1, Cinema 2, 1:1
1 Year Parts & Labor
Screen Size Class (diagonal)
10bits (8bit+FRC), 1.07B
Color Gamut (CIE1931)
sRGB over 99%
Hard Coating (3H), anti-glare
Pixel Pitch (mm)
0.2628 mm x 0.2628 mm
USB Up-Stream (ver 3.0)
USB Down-Stream (ver 3.0)
Yes x2 (Port 1 Supports Quick Charge)
One Click Stand Set-up
VESA® Size (mm)
100 x 100
Yes (included in Picture Mode)
Screen Split 2.0 (in OSC)
What people are saying
Rated 5 out of
Scooter Girl from
Telework DreamBought this fantastic monitor 2 days before being sent home for telework during the COVID Calamity. Couldn't be happier or more productive! We even use the USB charging ports for phones and headsets (nice unexpected touch LG!). You can set it for a variety of split screen configurations so your windows snap into place easily like three across evenly, or one big and one small etc. We have two laptops and a desktop attached that we easily switch between with a little hidden joystick on the bottom rim of the monitor. All great useful stuff. Honestly can't think of a thing we don't like about this beauty and wouldn't hesitate to recommend to a friend or to buy another one if we needed it.
Date published: 2020-05-30
Rated 5 out of
Outstanding Monitor for any laptopBought this to have more real estate for doing software development and was floored how easy the setup was and picture quality. I downloaded the driver and clicked on menu to configure the screen. I spent more time trying to decide which screen pattern I liked. The speakers are nice with good sound quality.
Date published: 2020-03-08
Rated 5 out of
Great monitorI have it only for month. So far it's the best monitor I've ever had.
Ask your questions. Share your answers. Please review the detailed product information and help guides in the Product Support section for this product prior to posting a question.
I have been using this monitor for a few months now and absolutely love it. I am interested in putting it on an adjustable arm mount that clamps to my desk. Is this possible and if so, what arm mounts is/isn't it compatible with?
Asked by: HanB
Yes. I have 2 of these monitors on Ergotron LX Desk Monitor Arms. They are easy to mount and hold up well. That said, I have one monitor on a big, corner style desk which requires the arm to be fully extended and I notice the monitor shakes a little when I'm aggressively typing ;) Otherwise, for standard use, it works great.
Answered by: electricg
Date published: 2020-08-26
Does this money to come with any remote control ?
Asked by: Manny okay
No, this monitor does not come with a remote control.
Answered by: ChrisPSM
Date published: 2019-12-10
Does this have built-in speakers?
Asked by: justbrowsing
Yes, the 34UC88-B features built-in speakers. ^CP
Answered by: ChrisPSM
Date published: 2018-11-03
I want to buy this but I wanted to make sure its good with a Mac Mini? Also does it have sound?
Asked by: cory Jensen
Yes, you can connect your Mac Mini to this computer. You can connect it thru direct HDMI connection. The unit also has built-in speakers. ^AC
Answered by: Amber C
Date published: 2020-01-22
The past 3 days my LG Monitor has no sound after windows update. After each update my LG monitor is not listed as a sound device. After system restore I have sound & it is listed again. When I run driver update it says I have the most update. How do I fix
Asked by: AJMa
Hello AJMa, that doesn't sound right. Please give us a call at 1-800-243-0000 when you are with the unit. ^AC
Answered by: Amber C
Date published: 2018-03-27
Hi, i want to buy this product but I will not hace the correct power cable. What type of power cable I have to buy for France ?
Asked by: SpartanII7
Our offices, in the United States, do not have product information for Belgium. In order to obtain such information, it is recommended to check our subsidiary’s website, at http://www.lg.com/be_fr/support/contact/telephone.
Answered by: NeilE
Date published: 2017-02-24
Can I set quad screen and assign hdmi 1 to the screen 1, hdmi 2 to the screen 2 ?
Works that way?
Asked by: Josias
I apologize, but no; according to the chart on page 25 of your owner’s manual, it is not possible to use both HDMI ports, at the same time, for the Picture By Picture (PBP) functions.
Answered by: NeilE
Date published: 2016-12-30
Hi LG Team,
I am in China, recently bought a LG34UC88, how to update the Firmware to an EN version as all languages available in settings are local to China (Chinese,Japanese,Korean) and I not fluent in any of them.
thank you for the support.
Asked by: GregCN
Our offices, in the United States, do not have specific product information units released in China. In order to obtain such information, it is recommended to check our subsidiary’s website, at http://www.lg.com/cn/support/contact/telephone.
*Prices, promotions and availability may vary by store and online. Prices subject to change without notice. Quantities are limited. Check with your local retailers for final price and availability.
Browse all of LG’s innovative, state-of-the-art computer monitors, including:
5K monitors. Take it up a notch with the LG UltraFine monitor, boasting an immersive 27-inch display with 5120 x 2880 resolution and 218 ppi that lets you experience the beauty of a MacBook or MacBook Pro on a large 5K screen. Add to that an unbelievable color spectrum of P3 99% and you’ll be editing and enjoying high-res photos like never before. Too much for you to handle? There’s an impressive 21.5-inch Mac-friendly 4K version as well.
21:9 Curved UltraWide monitors: These high-performance, feature-packed monitors are the ultimate multitaskers. Featuring UltraWide 21:9 resolution, 4-Screen Split, Mac®-compatibility, Dual Linkup and stunning Full HD 1080p. The perfect solutions for designers, photographers, gamers and other professionals who need more room for their big ideas.
IPS monitors: Boasting true-to-life colors, IPS computer monitors lessen color loss and help to keep colors consistent at virtually any angle. The LED backlighting delivers deep black levels and rich colors for an amazing contrast and color detail.
4K monitors: Digital cinema 4K resolution provides crisp images with a significant number of pixels on screen. 4K resolution displays over four times the resolution of standard 1920 x1080 FHD, and over half a million more pixels than UHD resolution, which means you can view even the finest details clearly.
Gaming monitors: Get panoramic multitasking and immersive gaming with features like a 144Hz refresh rate -- the highest of any gaming monitor -- plus a response time of less than 1ms (1/1000 of a second) in Motion 240 Mode. It’s the ideal monitor for real-time strategy and first-person shooters. Dynamic Action Sync lets you catch every single moment in real time, while LG’s Black Stabilizer brightens dark scenes so the enemy can’t hide. Get true-to-life color and brilliant clarity from virtually every angle.
TV monitors: Get Full HD 1080p entertainment from the TV, as well as your computer. With features like a built-in digital tuner and Dolby Surround sound, LG TV monitors can bring your favorite movies and TV shows to life, along with your favorite online content and games.
Discover the latest innovations in performance and technology with gaming, TV and computer monitors from LG, including 4K, ultra-wide, IPS, LED and more. See how we’re making life good.
*Disclaimer: 21:9 Screen or 3440 x 1440 (60Hz) resolution may not be available depending on content, device, interface or graphic card.
**Disclaimer: Color mode conversion between Adobe RGB and sRGB is available on the "Color Mode" menu.
*** FreeSync is only available when it is connected to Display Port.