[SOLVED] - Is it possible to add Thunderbolt 3 to an ASUS Sabertooth X79 Motherboard | Tom's Hardware Forum I would say it isn't compatible.
Z390 Chipset Z370 Chipset Z170 Chipset Z170-PREMIUM Z170-DELUXE Z170-PRO Z170-A Z170-AR SABERTOOTH Z170 MARK 1 SABERTOOTH Z170 S
ThunderboltEX 3 Card Compatible Model List C422 Chipset X299 Chipset Z390 Chipset WS C422 SAGE/10G ROG RAMPAGE VI EXTREME ROG MAXIMUS XI EXTREME WS C422 PRO/SE PRIME X299-DELUXE PRIME Z390-A PRIME X299-A WS Z390 PRO PRIME X299-A II TUF X299 MARK 1 TUF X299 MARK 2 Pro WS X299 SAGE II WS X299 SAGE/10G WS X299 SAGE WS X299 PRO/SE WS X299 PRO Z370 Chipset Z270 Chipset Z170 Chipset PRIME Z370-A MAXIMUS IX HERO Z170-PREMIUM PRIME Z370-A II PRIME Z270-A Z170-DELUXE PRIME Z270-AR Z170-PRO TUF Z270 Mark 1 Z170-A Z270-WS Z170-AR SABERTOOTH Z170 MARK 1 SABERTOOTH Z170 S MAXIMUS VIII EXTREME MAXIMUS VIII HERO MAXIMUS VIII RANGER X99 Chipset X99-DELUXE II X99-E X99-DELUXE SABERTOOTH X99 X99-DELUXE/U3.1 RAMPAGE V EXTREME/U3.1 X99-PRO/USB 3.1 RAMPAGE V EXTREME X99-PRO X99-E WS/USB3.1* X99-A/USB 3.1 X99-E WS* X99-A X99-A II * X99-E WS/USB 3.1 and X99-E WS support ThunderboltEX 3 card at PCIEX16_2 slot.Microsoft Word 2016 Microsoft Word 2016