Brands Guides About
Monoprice 100447 100ft DB9 Serial Extension Cable — main product image
Monoprice

Monoprice 100447 100ft DB9 Serial Extension Cable

★★★★★4.5 (2 reviews)

Extend Your Reach with Reliable Serial ConnectivityThe Monoprice 100ft DB 9 M/F Molded Cable provides a high-quality, cost-effective solution for extending your serial connections. Designed for reliable data transfer, this cable is perfect for a variety of applications... Length: 100ft C...

$24.95*
✓ In Stock on Amazon.com
View on Amazon

*Price sourced from Amazon.com. Last updated:Jul 16, 2026.Price and availability are subject to change.

Affiliate Disclosure: Studio Supplies may earn a commission from qualifying purchases made through links on this page, at no additional cost to you. This helps support our editorial team.

Notice a mistake? Let Us Know

Overview

Extend Your Reach with Reliable Serial Connectivity

The Monoprice 100ft DB 9 M/F Molded Cable provides a high-quality, cost-effective solution for extending your serial connections. Designed for reliable data transfer, this cable is perfect for a variety of applications...

  • Length: 100ft
  • Connector Type: DB9 Male to DB9 Female
  • Construction: Molded Connectors
  • Application: Serial Extension
  • Feature: Straight Extension Cable

Specifications

Cable Type
DB9 Serial Extension Cable
Length
100ft
Connector Type
DB9

Pros & Cons

👍 Pros

  • Offers a considerable length of 100 feet, providing extensive reach for connecting serial devices over long distances.
  • Designed as an extension cable, allowing for increased flexibility in placement of existing DB9 serial connections.
  • Useful for applications where devices need to be located far from the host computer or control unit.
  • Features DB9 connectors, maintaining compatibility with standard serial ports for industrial or legacy equipment.
  • A single long cable reduces the need for multiple shorter cables and signal boosters in some scenarios.
  • The significant length is particularly advantageous for installations in large rooms, factories, or specialized setups.
  • Provides a reliable solution for extending RS-232 communication lines for various professional uses.

👎 Cons

  • The 100-foot length may be excessive for many typical home or office setups, potentially leading to cable clutter.
  • A very long cable, such as 100 feet, can be more susceptible to signal degradation and electromagnetic interference over distance compared to shorter cables.
  • Only compatible with DB9 serial connections, limiting its use to devices that specifically use this older interface standard.
  • The physical bulk of a 100-foot cable can be difficult to manage, route, and store when not fully extended.
  • May require additional considerations for power or signal integrity on extremely long runs depending on the connected devices.
  • The extension cable does not offer any signal amplification, so performance depends entirely on the signal strength from the source device.
  • Specific gauge or shielding details are not provided, which are important factors for assessing signal quality over such a long run.

Frequently Asked Questions

This Monoprice DB9 Serial Extension Cable is 100 feet long.
This cable features DB9 connectors, designed for serial extension purposes.
While it can be used for short distances, its 100-foot length is primarily intended for extending serial connections over significant distances.
No, this is a DB9 serial extension cable and is not directly compatible with USB devices without an appropriate adapter.
The product description does not indicate that this cable provides any signal amplification; it functions as a passive extension.
The product description does not specify usage environment, but standard serial cables are typically designed for indoor use.
The primary purpose is to extend the reach of existing DB9 serial connections, which are commonly used for connecting legacy or industrial equipment to computers over long distances.

Related Products