Because there are two separate controllers in each USB 3.0 host, USB 3.0 devices transmit and receive at USB 3.0 data rates regardless of USB 2.0 or earlier devices connected to that host. Operating data rates for earlier devices are set in the legacy manner.
The Dow Jones Industrial average (DJIA) and NASDAQ Composite Index are indexes that track the movement of a number of different stocks. The DJIA is made of companies that are traded on the New York Stock Exchange while the NASDAQ index is composed of companies that are traded on the NASDAQ stock exchange.
Nasdaq Composite-The Nasdaq Composite Index is the tech stock index. It tracks stocks traded electronically on the Nasdaq market exchange, also called the over-the-counter market. It is a broad-based index including more than 3,000 companies, many of which are in the high-tech industry.