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Thunderbolt 4 AIC compatibility with older MBs

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Silverfox View Drop Down

Joined: 15 Nov 2023
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    Posted: 15 Nov 2023 at 7:04am
Hi everyone,

I have an interrogation that I hope someone will elucidate for me.

On the Asrock Thunderbolt 4 AIC and Thunderbolt 4 AIC R2.0 add-in card that both use the Intel JHL8540 Thunderbolt 4 controller (the only difference between those cards seems to the jumper locations on the boards themselves) and the list of compatible motherboard seems to be longer on the R2.0 model on the Intel side. Nothing moved on the AMD motherboards list.

Both revisions of the card officially support the AM4 X570S PG Riptide and B550 PG Riptide motherboards. My question is the following. Can either card work on an older X570 motherboards like the X570 Taichi that officially support the Asrock Thunderbolt 3 AIC R2.0 card ?

I don't look for official support. The main reason why I am looking for this card is because it is still available right now on the market while the Thunderbolt 3 AIC R2.0 model seems discontinued.

Are there any limitation embedded on the motherboard itself that could prevent newer TB4 cards to work on TB3 compatible motherboards since both technologies have some specifications in common like the 40Gbps bidirectional bandwidth and identical headers on the cards ?

I know from this source on the forum that other brand cards like Gigabyte work on Asrock MB𐍎 . Can newer Asrock TB cards work on older Asrock MB ?

Thank you in advance,
Proud X570 Taichi owner
Ryzen 9 5900X
Dual Samsung 990 Pro SSD
48 GB Corsair Vengeance LPX 3600 MHz
Radeon RX6750 XT
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