Downstream may refer to any of the following:
1. In telecommunications, downstream us used describe any transmission where data is sent from a server to a client. For example, a downstream connection is administered to you by your Internet service provider. In fact, Internet service performance is usually described in terms of the downstream connection speed, which is how fast data can be downloaded from the server.
2. With a Token Ring network, a computer is downstream from any other machine through which the ring has already passed.