Any manually operated (nonelectronic) switch used for switching between network devices. Manual switches are cheaper than powered electronic switches and are available in a variety of configurations for different uses. They generally have rotary switches on the front and connectors on the back. The connectors can be DB9, DB15, RJ-11, RJ-45, or other connectors such as V.35, BNC, or Centronics. Examples of manual switches include the following:
Graphic M-4. Two manual switch configurations: with a many-to-one switch and with an X switch.
Manual switches are often used in high-security environments in which a user can access a device only by physically switching to it. Some manual switches include key locks that control access.