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MrMister111

macrumors 68040
Original poster
Jan 28, 2009
3,895
381
UK
So I’ve broke the USB-C to ISB-C cable that came with the Dell monitor.

It worked on a MacBook Pro, also charged it, and a Win 10 laptop.

I found another USB-C to USB-C cable but it won’t detect monitor. Did the cable have to a specific USB-C type? What do you have to look for is so on description.

If so can someone point one to me on Amazon, as I need asap

Thanks
 

MajorFubar

macrumors 68020
Oct 27, 2021
2,175
3,827
Lancashire UK
You probably bought a charging cable with no data line.
You need a fully wired cable.
I use this:

 

dwig

macrumors 6502a
Jan 4, 2015
908
449
Key West FL
You probably bought a charging cable with no data line.
You need a fully wired cable.
I use this:

That one probably won't work. It only supports USB 2.0 data.

The OP needs a USB 3.1 cable at the very least, making sure that it supports video as well as data and adequate Power Delivery. I would suggest this USB 4 cable:


Certified USB-4 cables, like this one, support Thunderbolt 3 along will all of the various USB-3 protocols and speeds while adding a new USB-4 40gps mode.
 

izzy0242mr

macrumors 6502a
Jul 24, 2009
691
491
So I’ve broke the USB-C to ISB-C cable that came with the Dell monitor.

It worked on a MacBook Pro, also charged it, and a Win 10 laptop.

I found another USB-C to USB-C cable but it won’t detect monitor. Did the cable have to a specific USB-C type? What do you have to look for is so on description.

If so can someone point one to me on Amazon, as I need asap

Thanks
Get one from Monoprice.com. They have lifetime warranties on all cables.
 

MrMister111

macrumors 68040
Original poster
Jan 28, 2009
3,895
381
UK
So not all USB-C are capable of video? You have to specifically look for if it states about video?

Wish it was more clear. Will look about and make sure description says video
 

izzy0242mr

macrumors 6502a
Jul 24, 2009
691
491
So not all USB-C are capable of video? You have to specifically look for if it states about video?

Wish it was more clear. Will look about and make sure description says video
You prob know, but by "video" they mean "graphics" as opposed to just data or power. But yeah, you will need to verify the cable you get supports carrying video/graphics and isn't just a little power cable.
 

dwig

macrumors 6502a
Jan 4, 2015
908
449
Key West FL
So not all USB-C are capable of video? You have to specifically look for if it states about video?

Wish it was more clear. Will look about and make sure description says video
Any USB-C cable that supports at least USB 3.1 gen 1 will support video. Just because the cable has USB-C connectors, it doesn't mean that it supports anything faster than USB 2.0.

The problem is that supporting high data speeds requires more wires and better shielding than USB 2.0 and supporting higher wattage for power/charging requires larger gauge wire. As a result, many USB-C cables that are marketing as "charging" cables will only support USB 2.0 data in order to keep the cable light, flexible and inexpensive.

Given that you are using a MBP that supports Thunderbolt 3, my recommendation is that you look for only USB-IF (the USB standards organization) certified USB-4 cables. That guarantees support for all services your MBP has, Thunderbolt 3, USB-3.1, DP-alt mode, ...) as USB-4 supports TB3, all USB 3.x variants, DP-alt mode (for video), and 100w charging/power.
 

HDFan

Contributor
Jun 30, 2007
7,290
3,342
So not all USB-C are capable of video? You have to specifically look for if it states about video?

my recommendation is that you look for only USB-IF (the USB standards organization) certified USB-4 cables. That guarantees support for all services your MBP has, Thunderbolt 3, USB-3.1, DP-alt mode, ...) as USB-4 supports TB3, all USB 3.x variants, DP-alt mode (for video), and 100w charging/power.

Absolutely only purchase a certified cable. USB4 is certainly an improvement to the USB mess, but according to Tom's hardware:

"Thunderbolt compatibility is not a required part of the USB 4 spec so manufacturers don’t have to implement it."


There are also 2 data speeds - 20 or 40 Mbps. The certification logo on the packaging will tell you which the cable supports.


There are also different power specifications, up to 240 watts, so again you have to check the certification.

Screen Shot 2022-06-18 at 1.30.57 AM.jpg

So still a bit of a mess.
 
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