[WEBINAR] Application Acceleration: Faster Performance for End Users


Definition - What does DB-9 mean?

DB-9 is an analog 9-pin plug of the D-sub miniature (D-sub) connector plug and socket family for computer and communication devices. Some uses and characteristics of the DB-9 connector are:

  • Serial communication
  • Token Ring network adapters
  • IBM video interfaces
  • Asynchronous data transfer (standardized as RS-232C)

This term was originally known as DE-9.

Techopedia explains DB-9

DB-9 connectors are built with the fewest pins and holes in the D-sub connector family. At one time, DB-9 was the typical computer and server component designed to work with the EIA/TIA 232 serial interface, which established the 9-pin function as a standard. The original DB-9 connectors were used for serial peripheral devices such as keyboards, mice and joysticks. Modern DB-9s include interfaces such as USB, PS/2 and FireWire.

Techopedia Deals

Connect with us

Techopedia on Linkedin
Techopedia on Linkedin
"Techopedia" on Twitter

Sign up for Techopedia's Free Newsletter!

Email Newsletter

Join thousands of others with our weekly newsletter

Free Whitepaper: The Path to Hybrid Cloud
Free Whitepaper: The Path to Hybrid Cloud:
The Path to Hybrid Cloud: Intelligent Bursting To Amazon Web Services & Microsoft Azure
Free E-Book: Public Cloud Guide
Free E-Book: Public Cloud Guide:
This white paper is for leaders of Operations, Engineering, or Infrastructure teams who are creating or executing an IT roadmap.
Free Tool: Virtual Health Monitor
Free Tool: Virtual Health Monitor:
Virtual Health Monitor is a free virtualization monitoring and reporting tool for VMware, Hyper-V, RHEV, and XenServer environments.
Free 30 Day Trial – Turbonomic
Free 30 Day Trial – Turbonomic:
Turbonomic delivers an autonomic platform where virtual and cloud environments self-manage in real-time to assure application performance.