Optiplex 7080. Thunderbolt 3 card

https://www.dell.com/en-us/shop/pcie-thunderbolt-3-card-full-height/apd/540-bcxe/networking

Manufacturer Part FFVJK | Dell Part 540-BCXE | Order Code 540-Bcxe | Dell

PCIE Thunderbolt 3 Card (Full Height) 

Estimated Value$99.99 Dell Price$79.99

https://www.ebay.com/itm/113767199273

Dell Precision T7820 T7920 Tower Thunderbolt 3 Add-In Card DPWC500 8DTHW P1XY1

https://www.dell.com/support/kbdoc/en-us/000108966/optiplex-7080-windows-10-driver-pack

Thanks for the suggestions. Is the ebay one the same as the one on the Dell page? The ebay one seems to require a header on the motherboard and I think the one on the Dell Page requires an external cable that connects from the computer display port to the pcie display port input. Is this one the same https://www.ebay.co.uk/itm/166537783368?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=hG_AXTZJSfW&sssrc=2047675&ssuid=rBLxRRCnTR6&widget_ver=artemis&media=COPY

I cant find the support page or the manual for the card. Can you provide a link to the manual

Are all thunderbolt 3 functions supported specially 2 HD monitors. My intension is to be able to connect my current recording studio setup to my laptop but also retain the existing functionality for my Optiplex desktop when not using the laptop  - USB sound card, 2 DP monitors, Native Instruments USB music keyboard and and Native Instruments USB Maschine drum/sample player

The one on eBay uk is

the one on eBay us is

SKU number: 555-BEOX kit contains the card (p/n# P1XY1, CRD,NTWK,I/O,PCIE,TBT3,FH,V2) and cable (p/n# H71G3, ASSY,CBL,DP1.3,TBT3/USB3.1,D8)

Add-in cards on the newer Precision systems that support Thunderbolt (xx20,xx30) don't require a GPIO cable/header. All that is required is the card and a DisplayPort 1.3 to Thunderbolt 3/USB 3.1 Cable (usually supplied with the card).

Part number H71G3 =
13" DP to DP pass through cable used in conjunction with the add in Thunderbolt 3 I/O card DP and video card DP

555-BEOY sales SKU, 7XY5K part number $70 =
Dell Thunderbolt 3 PCIe card (DP1.3/USB Type-C/USB Type-C)
Sub part P1XY1 PCIe Thunderbolt 3, Network
Sub part H71G3 cable

No manual in public, but according to the internal documentation. The only thing to try is test a USB Type-C device on the TB3 card’s USB Type-C port. Open the Device Manager, connect a USB Type-C device and cable to the cards USB Type-C port, watch the Device Manager to see if a "new" device is found.

The TB3 add in card is essentially meant for high speed data transfer.

It can also be used as a bridge to connect a video card DP to a monitor that has USB-C port only.

What the mod just sent me:

https://www.dell.com/en-us/shop/pcie-thunderbolt-3-card-full-height/apd/540-bcxe/wifi-and-networking 540-BCXE = Dell sales SKU FFVJK = Manufacturer part number Sub-part of FFVJK =

83T0C TB3 PCIe network card (Precision 3640/7865, Optiplex 7080)

Many thanks.

I think I might be wasting  your time! I had a look at the Optiplex 7080 system board and it doesn't have a thunderbolt socket. It has a socket labelled "video" and another labelled "type C". When I go to the bios there is no reference to Thunderbolt. I am guessing my only option would be the USB C alt mode card but my understanding is that it only supports one monitor.

Can you confirm if my understanding is correct. 

the Dell TB card goes into a PCIex4 slot.  you do not need a TB socket on mobo to support this card.  simply connect your compatible device to the card's USB C port for high speed data transfer, after the card shows up in dev mgr (you need to install the Dell TB driver for 5080).