The VIA Labs VL800 is a USB 3.0 controller chip designed and produced by VIA Labs. It is used in various devices and computer systems to enable USB 3.0 connectivity and high-speed data transfer rates. The VL800 chip supports up to four USB 3.0 ports and is compatible with both USB 2.0 and USB 1.1 devices. It offers enhanced performance compared to previous USB standards, allowing for faster data transfer and improved power efficiency. The VL800 chip is commonly integrated into motherboards, expansion cards, and other devices that require USB 3.0 functionality.