I recently purchased 2 Precision 3660 workstations, which according to the spec sheet (Page 7 of https://www.delltechnologies.com/asset/en-us/products/workstations/technical-support/precision-3660-... ) is compatible with a thunderbolt 4 add-in card.
I bought a Asus thunderbolt 4 card, only to learn it was proprietary to Asus motherboards.
Does anyone know if this card will work for the 3660? https://www.dell.com/en-us/shop/thunderbolt-4-pcie-card-full-height-customer-kit-for-tower/apd/540-b...
I tried to buy a Dell Thunderbolt 4 card from Dell but was told it was not available. They offered Thunderbolt 3 but I doubt that it was tested for compatibility. Previous generations of the 3600 series had a Thunderbolt option entry in the BIOS and a Thunderbolt driver but 3660 does not have that. It appears that Dell overpromised and underdelivered in this case.
The motherboard does have a 10-pin thunderbolt header (photo below).
Dell doesn't offer any manuals or documentation on ANY of their thunderbolt add-in cards online and support cannot seem to verify if the cards they carry will work.
Still no update from Dell support - despite sending a DM to their support team.
Page 67 of the service manual (https://dl.dell.com/content/manual59803069-precision-3660-tower-service-manual.pdf?language=en-us&ps...) shows a diagram of the motherboard... and then gives no key to reference the numbered components on the board on the page prior, after, or the same page.
Item #22 in the below screenshot is labeled TBT on the board itself:
Life on the bleeding edge...
Sorry, I don't have any add'l info related, but share your concern.
I did find This webpage from www.mattmillman.com to be helpful in understanding the complexity in general of adding thunderbolt when it's not part of the system you take out-of-the-box.
Thank you for posting & I will be watching for updates/solutions.
Also - I don't think any Thunderbolt 3 or 4 will work until/if Dell updates BIOS to provide support.
Unless it's hidden somewhere, I don't see support in the latest BIOS release for 3660 for any type of Thunderbolt.
The 3660 BIOS is more than BIOS, kind of integrated miniOS/GUI shell for all things pre-boot. Nearly impossible to use without a mouse (and my everyday mouse, a wired USB Kensington Pro-fit full -size is impossible to use with the BIOS GUI - tiny movement of mouse moves pointer across the screen - I have to use a temporary mouse ....)
Also a very strange and misleading marketing information from Dell Corp.: They mention a thunderbolt card to order with the Precision 3460 configuration but will probably send a D-SUB 9 pin card (link)
Two more updates:
1) Compatible TB4 controller driver for Precision 3660 Intel Thunderbolt Controller Application | Driver Details | Dell US
2) A card to ship in Dec. 2022 Thunderbolt 4 PCIe card - Full Height Customer Kit for Tower | Dell USA that does not specifically list Precision 3660 as compatible