Monoprice

Monoprice 101134 DB9F/DB25F Serial to Parallel Adapter

Seamlessly Bridge Serial and Parallel Connections The Monoprice DB9F/DB25F Molded Adapter provides a reliable solution for connecting serial (DB9) and parallel (DB25) interfaces. This adapter is designed to facilitate communication between devices with different port types, offering a simple and...

$3.99*
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*Price sourced from Amazon.com. Last updated:Jul 15, 2026.Price and availability are subject to change.

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Overview

Seamlessly Bridge Serial and Parallel Connections

The Monoprice DB9F/DB25F Molded Adapter provides a reliable solution for connecting serial (DB9) and parallel (DB25) interfaces. This adapter is designed to facilitate communication between devices with different port types, offering a simple and effective connectivity solution.

Specifications:

  • Connector 1: DB9 Female (Serial)
  • Connector 2: DB25 Female (Parallel)

Key Features

Serial (DB9) to Parallel (DB25) connection adapter

Monoprice continually strives to improve its product line to bring our customers the best products available

Therefore changes may be made to listed specifications without prior notice

Item received may not match photo or specs shown

Specifications

Brand
Monoprice
Product Type
Serial to Parallel Adapter
Serial Connector
DB9F
Parallel Connector
DB25F

Pros & Cons

👍 Pros

  • Enables connection between devices with DB9 serial and DB25 parallel ports, bridging older hardware.
  • Offers a compact and simple adapter solution for specific legacy connectivity needs.
  • Manufactured by Monoprice, known for producing a variety of cable and adapter products.
  • Useful for situations where direct serial-to-parallel port conversion is required without a full cable.
  • Helps extend the usability of existing equipment with disparate port types.

👎 Cons

  • Only converts between DB9 serial and DB25 parallel, not suitable for other port types.
  • The functionality is very specific and not applicable to modern computer systems without legacy ports.
  • Changes to listed specifications may occur without notice, as stated in the features, which could affect future purchases.
  • The item received "may not match photo or specs shown," introducing uncertainty for buyers.
  • Its use is limited to niche applications involving older peripherals and systems.

Frequently Asked Questions

The Monoprice 101134 adapter serves as a Serial (DB9) to Parallel (DB25) connection adapter, allowing interoperability between devices with these specific legacy ports.
This adapter is designed for specific legacy connections (DB9 serial and DB25 parallel), so it is generally not suitable for connecting modern devices that typically use USB, HDMI, or Ethernet.
This adapter features a DB9F (female) serial connector and a DB25F (female) parallel connector.
The product features state that "Item received may not match photo or specs shown," indicating that there could be minor variations from the depicted image.
If you have an older printer or device that uses a DB25 parallel port and your computer has a DB9 serial port, this adapter could potentially facilitate the connection, though driver support would also be necessary.