Best D-Sub Serial Adapters of 2026

The ANMBEST DB9 Breakout Connector is designed to provide a reliable and durable connection for your serial devices. Its copper-plated contacts ensure strong conductivity and long-lasting performance, so you won’t have to worry about poor connections. You’ll appreciate the easy setup since no soldering is needed, making wiring quick and hassle-free. The connector works with a wide range of serial equipment, from computers to industrial instruments, giving you great flexibility. Plus, it includes a cable pressing plate that keeps your wires securely in place, preventing accidental disconnections while you work.

The ANMBEST DB25 Solderless Connector is a high-quality and durable RS232 D-SUB Serial to 25-pin Port Terminal Male Adapter Breakout Board with a case and long bolts and nuts. Its pure copper nickel-plated joints and fine solder joints ensure resistance to plug, good contact, durability, and a long life. With its easy-to-use 128 type environmental protection copper terminal design, no welding is required, and cumbersome tools are unnecessary. It can connect all kinds of serial devices, and all signal ports are clearly named and labeled on both sides of the board for quick wiring. Each set of products comes with a set of cable pressing plates to prevent easy removal of connected wires. The shell has a non-slip design.

The JUXINICE DB9 Serial Adapter offers an easy setup by allowing you to connect directly to terminal pins without extra wiring, saving you time and hassle. Its slim 16mm design is perfect if you’re working in tight spaces where larger connectors won’t fit. Built with sturdy copper alloy terminals, it provides a strong and reliable connection that can handle cables from 30 to 18 AWG and resist pulling forces up to 30 pounds. Plus, its simple and compact design means it works well with a variety of devices, giving you more flexibility in your projects.

The YIOVVOM DB9 Male Serial Adapter is a screw-type connector that provides a 9-pin port adapter to terminal connector signal module with a case. The adapter has a cable hole diameter ranging from 5mm to 10mm, allowing for wire range between 12-24AWG. Made of metal and electric parts, it comes in black and green, weighs 30g, and measures 58 x 35 x 21mm (LWH). It comes with three protective covers to ensure durability.

The DTECH DB9 Adapter is a convenient, solderless solution for creating custom DB-9 RS232 connections. With clearly labeled signal pins on both sides of the PCB, you can quickly connect and troubleshoot your devices with ease. Its sturdy construction features pure copper joints and gold-plated contacts, ensuring reliable data communication. Additionally, the compact case is designed for versatility, accommodating various cable sizes and tail tubes, making it suitable for a wide range of applications such as CNC controllers, digital cameras, and more.

The DTech DB9 to RJ45 Serial Adapter is an affordable and straightforward solution for serial data communication between RS232 COM port devices with standard 9 Pin D-sub RS-232 Devices including computers, printers, and routers. The bi-directional converter can extend RS232 serial signals up to 65ft using a pair of DB9 to RJ45 socket couplers. The adapter features thumbscrews for secure connection and is compatible with inexpensive cat5 or cat6 RJ45 network cables.

The DTECH RS232 RJ45 Adapter offers a simple and affordable way for you to connect RS232 COM port devices using common Cat5 or Cat6 Ethernet cables. This adapter converts the traditional DB9 serial connector into an RJ45 format, making it easier to use network cables for serial communication. When you use two of these adapters together, they can extend your serial signals up to 65 feet, giving you greater flexibility in device placement. Plus, the bi-directional design with thumbscrews ensures a secure and easy connection, so you can quickly set up your devices without hassle.