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TNAJanssen

macrumors newbie
Apr 20, 2011
11
1
My macbook will not recognise the audio output of the display (i connected my speakers to the display).

Does somebody manage to make it work?
 

EPO75

Suspended
Oct 12, 2016
162
167
Rotterdam
Shame tbh they didn’t include some speakers in it like the LG 32UL950, kinda easy if your working with a Mac Mini M1, but yeah can’t have it all.
 

stevevan

macrumors newbie
Feb 14, 2022
7
18
Dell U2721DE and U3223QE side by side, to demonstrate the size difference between 27" and 32" and the difference between the non-black and black IPS panels (contrast of 1000:1 vs 2000:1). The U3223QE looks even more beautiful in real life, than in photos. Also, 32" is so much bigger than 27"!

IMG_0656.jpeg

IMG_0657.jpeg
 

justsomerandomaccount

macrumors newbie
Feb 16, 2022
11
2
Based on my experience with S2722QC, if "High Data Speed" is selected for "USB-c Prioritization", I get 65w (max power supply for S2722QC, I assume you'll get 90w for U2723QE) + 4k60hz at 24 bit color + USB 5Gbps speed. This needs mac to support DP 1.4 (HBR3). I think all macs after 2018 support that. If I select "High Resolution", I get 65w + 4k60hz at 30 bit color + USB 2 speed.
Apparently the refresh rate with my 2019 MacBook Pro 16" is reduced to 30Hz if "High Data Speed" is activated. If "High Resolution" is active, refresh rate is back to 60Hz but ports including NIC are much slower.

Is this the same for others?
 
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tea_is_great

macrumors newbie
Feb 16, 2022
8
3
Apparently the refresh rate with my 2019 MacBook Pro 16" is reduced to 30Hz if "High Data Speed" is activated. If "High Resolution" is active, refresh rate is back to 60Hz but ports including NIC are much slower.

Is this the same for others?

is that with the latest monitor (U2723QE / U3223QE?). Having USB 3.2 instead of thunderbolt could be the reason. I don't understand why would they not use thunderbolt in such a beast.
 
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tea_is_great

macrumors newbie
Feb 16, 2022
8
3
Yes, Dell U3223QE connected via the Dell USB-C cable.
Makes sense, but that is unfortunate.

USB-C max speed is 20GB/s and for 4K/60Hz you need at least 18GB/s. That is why you end up having slower speed on other ports. If you choose "High data speed", you get 4k/30HZ and have additional ~10gbps for the ports.

They could have solved the problem with a single thunderbolt port (40gbps).
 
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Clonetrooper

macrumors member
Nov 20, 2021
49
5
England
Stupid questions but what's the best way to connect this to the mini. USB C or HDMI? I only have those two precious USB c ports on my m1 mini and one has an SSD attached! But I figure I'm going to have to use the other one for the monitor to use the built in ports?

Also looking at the manual it has an upstream usb c port and a downstream one, what does that mean exactly. What can I do with one that I can't do with the other?

I think I'm going to order both from Dell and see which sizing I prefer.
 

justsomerandomaccount

macrumors newbie
Feb 16, 2022
11
2
Makes sense, but that is unfortunate.

USB-C max speed is 20GB/s and for 4K/60Hz you need at least 18GB/s. That is why you end up having slower speed on other ports. If you choose "High data speed", you get 4k/30HZ and have additional ~10gbps for the ports.

They could have solved the problem with a single thunderbolt port (40gbps).
Thanks for the clarification.

Dell's website states "Streamline your workspace with extensive connectivity ports including USB-C (up to 90W power delivery), RJ45 (Ethernet), DP1.4, and HDMI. Quick Access USB-C (up to 15W of power charging) and super speed USB 10Gbps ports enable easy connections and fast data transfers." but apparently there are restrictions.

Would this be any better with most recent MacBook Pros?
 

tea_is_great

macrumors newbie
Feb 16, 2022
8
3
Thanks for the clarification.

Dell's website states "Streamline your workspace with extensive connectivity ports including USB-C (up to 90W power delivery), RJ45 (Ethernet), DP1.4, and HDMI. Quick Access USB-C (up to 15W of power charging) and super speed USB 10Gbps ports enable easy connections and fast data transfers." but apparently there are restrictions.

Would this be any better with most recent MacBook Pros?

There wouldn't be any difference if it is a new MacBook Pro or slightly older. They have been using only Thunderbolt ports for several generations. The limit is on the monitor's end (the port). If you check more expensive monitors from Dell, they write that it has Thunderbolt:

It looks like you may need to connect directly to your MacBook if you need fast data transfer.

I am not sure, just speculating, but what if you use port numbers 4 (DP) and 5 (USB-C) to connect to your MacBook? I think you should be able to get 60HZ/4K and high data speed. However, then you use 2 ports instead of 1.
 

mogrefy

macrumors member
Apr 12, 2003
72
15
Idaho
Same on both monitors. Brightness and contrast 75%, preset mode "standard", all other colour and picture settings are factory default.
What resolution scale are you preferring to run? My four displays shipped today, showing Friday arrival!
 

justsomerandomaccount

macrumors newbie
Feb 16, 2022
11
2
There wouldn't be any difference if it is a new MacBook Pro or slightly older. They have been using only Thunderbolt ports for several generations. The limit is on the monitor's end (the port). If you check more expensive monitors from Dell, they write that it has Thunderbolt:

It looks like you may need to connect directly to your MacBook if you need fast data transfer.

I am not sure, just speculating, but what if you use port numbers 4 (DP) and 5 (USB-C) to connect to your MacBook? I think you should be able to get 60HZ/4K and high data speed. However, then you use 2 ports instead of 1.
Understood. Thanks for the proposal, I had the same thought but it didn't work, i.e. it did only consider the primary USB-C connection.
The other idea was to just make use of the primary USB-C connection for power delivery and data but not for video but this doesn't work either.
 

Amethyst1

macrumors G3
Oct 28, 2015
9,832
12,249
Apparently the refresh rate with my 2019 MacBook Pro 16" is reduced to 30Hz if "High Data Speed" is activated. If "High Resolution" is active, refresh rate is back to 60Hz but ports including NIC are much slower.
If the MacBook Pro has DisplayPort 1.4 (HBR3), then "4K" at 60 Hz and USB 3.x speeds should™ be possible because only two of USB-C's high-speed lanes need to be dedicated to DisplayPort 1.4 HBR3 for "4K" at 60 Hz (as opposed to dedicating all four high-speed lanes to DisplayPort 1.2 HBR2), leaving the other two high-speed lanes available for USB 3.x.

There wouldn't be any difference if it is a new MacBook Pro or slightly older. They have been using only Thunderbolt ports for several generations. The limit is on the monitor's end (the port).
The Thunderbolt port still acts as a "normal" DisplayPort output if a DisplayPort monitor is connected. The questions, then, are (1) does the MacBook Pro have DisplayPort 1.4 and (2) is the monitor wired up for that as well. And those new Dells are.

Would a Thunderbolt 2 <-> USB-C cable not work as both DP and USB between a Mac Pro and these screens - or am I mixing up technologies?
No.
You can't hook up a USB-C monitor, such as those Dells, using a Thunderbolt 3 <-> Thunderbolt 2 adapter.
The vast majority of USB-C to DisplayPort cables go in that direction only.
Adapters or cables that go from DisplayPort (plus USB) to USB-C do exist though, such as the Wacom Link Plus, which is what I use.
 
Last edited:

stevevan

macrumors newbie
Feb 14, 2022
7
18
What resolution scale are you preferring to run? My four displays shipped today, showing Friday arrival!
On the 27" no scaling, on the U3223QE I use the middle scaling setting (3008x1692).
I'm really curious to see 4 of these next to each other, so please don't forget to post a picture ;)
 

mosylvestre

macrumors newbie
Oct 20, 2021
16
43
My macbook will not recognise the audio output of the display (i connected my speakers to the display).

Does somebody manage to make it work?

The same happened to me when I plugged the USB-C cable into one of the ports on the MacBook’s left side. Once I used one of the ports on the right side (next to the MacBook audio jack) it worked. Maybe that could be your solution as well?
 

scubaturtle

macrumors newbie
Feb 15, 2022
2
0
Thank mogrefy and TheJustAbout for the information.

I think shopblt will ship overseas and is in stock.
I check the shopblt website and they require the customer outside of the US to provide the front and back image of the credit card for the first time purchase from them, which I consider as not a usual request.
Still, I will look into their website for other payment methods and compare with paying by the credit card.


I ordered direct from Dell UK - not sure if that helps at all.
I notice that these monitors are also available on Dell official website of each countries (including mine) in the past few days.
However, the price listed on Dell official website of my country is higher than the others for almost 60%.
So that's the reason why I am looking for the seller who ship overseas.
 

justsomerandomaccount

macrumors newbie
Feb 16, 2022
11
2
If the MacBook Pro has DisplayPort 1.4 (HBR3), then "4K" at 60 Hz and USB 3.0 speeds should™ be possible because only two DisplayPort 1.4 lanes are necessary for "4K" at 60 Hz (as opposed to all four DisplayPort 1.2 HBR2 lanes), leaving the other two lanes available for USB 3.0.


The Thunderbolt port still acts as a "normal" DisplayPort output if a DisplayPort monitor is connected. The questions, then, are (1) does the MacBook Pro have DisplayPort 1.4 and (2) is the monitor wired up for that as well. And those new Dells are.


No.
You can't hook up a USB-C monitor, such as those Dells, using a Thunderbolt 3 to Thunderbolt 2 adapter.
The vast majority of USB-C to DisplayPort cables go in that direction only.
Adapters or cables that go from DisplayPort (plus USB) to USB-C do exist though, such as the Wacom Link Plus, which is what I use.
Do you know where a list of specifications for MacBook Pros is maintained? Apple's Technical Specifications don't mention HBR: Technical Specifications
It's a 2019 MacBook Pro 16" with 2.3 GHz Intel i9 and AMD Radeon Pro 5500M.

Thanks.
 

tea_is_great

macrumors newbie
Feb 16, 2022
8
3
At this point, I am interested why do you think that dell is a better option than LG?

LG's advantages:
has 2(!) thunderbolts vs single USB-C (you don't choose between high resolution and data transfer, you can have both),
450 cd/m² vs 400,
cheaper,
has speakers (hopefully as good as Ultrafine 4k/5k)

Dell's advantages:
90W charging vs 60W
great ports
better contrast (2000 vs 1300)
IPS Black (?)

I am just trying to make a decision and would like to know your opinion.
 

Jeo_cz

macrumors regular
Dec 19, 2018
132
231
Prague, CZ
Do you know where a list of specifications for MacBook Pros is maintained? Apple's Technical Specifications don't mention HBR: Technical Specifications
It's a 2019 MacBook Pro 16" with 2.3 GHz Intel i9 and AMD Radeon Pro 5500M.

Thanks.
Your Mac has DP 1.4 but Apple doesn't support Alt Mode/MST in macOS. The last thing to try is disabling power delivery by monitor and charge the notebook through its charger.
 

Amethyst1

macrumors G3
Oct 28, 2015
9,832
12,249
Your Mac has DP 1.4 but Apple doesn't support Alt Mode/MST in macOS.
macOS does DisplayPort Alternate Mode via USB-C just fine. It doesn't support the kind of MST necessary to daisy-chain multiple DisplayPort monitors but you don't need that for a single monitor.
 

mogrefy

macrumors member
Apr 12, 2003
72
15
Idaho
At this point, I am interested why do you think that dell is a better option than LG?

LG's advantages:
has 2(!) thunderbolts vs single USB-C (you don't choose between high resolution and data transfer, you can have both),
450 cd/m² vs 400,
cheaper,
has speakers (hopefully as good as Ultrafine 4k/5k)

Dell's advantages:
90W charging vs 60W
great ports
better contrast (2000 vs 1300)
IPS Black (?)

I am just trying to make a decision and would like to know your opinion.
For me, the stand on the LG is a deal breaker in portrait mode as it is wider than the width of the display in portrait mode, making it impossible to align multiple side-by-side. It is also out of stock on LG site, and on AMZN listed at $1,299.99 while I paid $1,092.49 so nearly a $200.00 price difference.
 
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