Apparantly Thunderbolt 3 is an option at time of purchase on Precision 7520. Does this mean that the Thunderbolt 3 controller is already present on the motherboard? If so, can I have the input socket added?
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Does the computer have the USB-C/TB3 hole on the board by chance? If not, you’ll also need a new upper chassis as well.
I’m doing some research on this, and it looks like the option is a different motherboard so you’d need to change the **entire** motherboard most likely :(. Sad to say, if you bought this used in error you’re better off putting back on the market and making sure the next one supports TB3 - if bought new, live with it or sell it depending on how bad you want TB3.
Even then, Dell seems to have a lot of USB-C/TB3 stability issues, so you may have avoided a problem here as weird as that seems. They seem to even have trouble with FIRMWARE UPDATES resolving the issue as well. Win10 21H1 doesn’t even help the issue, so it’s something with their USB-C/TB3 firmware. My HP EliteBook (840 G3) lacks TB3, but it’s USB-C port is stable so HP and Lenovo* do not seem to have any issues like Dell. Sad to say, Dell isn’t what they used to be between the plastic chassis, unstable TB3/USB-C firmware and cheap batteries that are known to expand. They went downhill with Skylake :-(. Their crappy build quality and USB-C/TB3 firmware problem is why I bought an HP when I was looking for a NVMe compatible replacement for my E7440! And in addition, they have had issues with soft cell pack expansion for years, and my E7440 is one of the notorious systems - OUCH!
*Lenovo WAS affected by the TB3 Intel flaw on some of their laptops, but it’s been fixed since.
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Thanks Nick for your insight. I haven't checked the motherboard but your answer makes sense if the option is available only at time of purchase. I bought it used and it is a very good tool for my CAD work. The Thunderbolt issue arose when looking at audio interface hardware, data transfer speeds etc and, on probing deeper, both USB 2 and 3 are adequate - although Thunderbolt is preferred. However, its implementation in PCs is all over the place, as you have noted, and for my purposes not worth pursuing at this stage as it is not primary. I will indicate that you have solved my question, thanks.
Derek
@derekfreeman HP seems to have it down well, along with Lenovo. Dell is still being special with their weird problem child firmware :(.
This custom firmware needs to be thrown out as if it was a baby in bath water, especially since the issue seems to be isolated to Windows and other OSes know how to make the fudged Dell FW work under Linux. Time to stop hacking at this god awful FW, Dell! Get the reference code and "firmware update" it to working reference.
Granted my 840 G3 had weird USB-C issues when I first got it, but knowing Sure Start is paranoid I took a shot at it and re-flashed the BIOS. Fixed the issue, and it's been perfect since.
If they got TB3 to freaking work I may have disregarded the Latitude line and went for a lower end Precision with TB3 and stuck with them.
@nick Thats good to know for the future if I look for another laptop for audio uses; I don't want to switch over to Apple; I just wish everything was on Linux!
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