Thunderbolt™ Onboard An industry first, ASUS has placed Thunderbolt I/O technology onboard, & are set to revolutionize the speed at which peripherals & displays operate. Featuring a maximum bi-directional speed of 10 Gbps, Thunderbolt is 2 times faster than USB (Universal Serial Bus) 3.0 & an incredible 20 times faster than USB (Universal Serial Bus) 2.0. & with the ability to daisy-chain up to six devices without the need for a hub or switch, that means less overheard for a clutter free computing experience. For example, users can connect multiple native Thunderbolt storage devices, an HD video capture device & even an HD display to a single Thunderbolt chain while maintaining maximum throughput. You can also connect a Display Port, DVI, HDMI or VGA display with an existing adapter. ASUS SSD Caching II Multiple SSD Caching, Instant Upgraded Speed SSD Caching II has been upgraded with a multiple caching function, . ..