Asus ThunderboltEX II Components Thunderbolt 2 Technology - 2X Faster than original Thunderbolt and 4X faster than USB3.0. Daisy-chain up to 9 devices per port with improved transferring speed up to 20 Gb/s. Simply Plug and Upgrade! - Compatible with all the Thunderbolt devices Easy Installation - Exclusively Compatible with ASUS 8 series MBs Only supported on these motherboards: ROG MAXIMUS VI EXTREME, TUF SABERTOOTH Z87, ASUS Z87-PRO, ASUS Z87-PRO (V EDITION, ASUS Z87-PLUS, ASUS Z87-PLUS (VivoMouse EDITION), ASUS Z87-A, ASUS Z87-A (NFC EXPRESS EDITION)