DB connector

DB Connector is any connector used for connecting data terminal equipment (DTE).

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What is DB Connector?

Any connector used for connecting data terminal equipment (DTE). The letters “DB” stand for “data bus” and are followed by a number that indicates the number of lines or pins in the connector. DB connectors were formerly called D-series connectors. DB connectors can be used for either serial or parallel connections between devices. Common members of the DB family include the following:

  • DB-9, a 9-pin serial connector for connecting modems, serial printers, mouse devices, and so on
  • DB-15, a 15-pin connector for connecting such devices as Macintosh monitors and network interface cards (NICs) for 10Base5 drop cables
  • DB-25, a 25-pin connector for connecting Macintosh Small Computer System Interface (SCSI) devices, modems, serial printers, parallel cables, switch boxes, and so on
  • DB-37, a 37-pin connector for connecting such devices as routers and Channel Service Units (CSUs)
  • DB-60, a 60-pin connector for connecting such devices as Cisco routers

DB connectors and pin layout

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