Best Db9 Female Serial Adapters of 2025

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Db9 Female Serial Adapters are a type of connector that allows devices with a serial port to communicate with other devices or computers. It is a female connector that can be attached to a male connector, providing a secure and reliable connection. These adapters are commonly used in industrial automation, telecommunications, and networking applications. They are also useful for connecting older devices that use serial ports to newer computers that only have USB ports. Db9 Female Serial Adapters come in various configurations, including straight and right-angle versions, making them suitable for different types of installations.
At a Glance: Our Top Picks
Top 10 Db9 Female Serial Adapters
ANMBEST DB9 to RJ45 Adapter
The ANMBEST Serial Ethernet Adapter is designed to help you connect RS232 ports using CAT5, CAT5E, or CAT6 cables, allowing signal transmission up to 100 feet. Its RJ45 pin configuration ensures compatibility with various devices, making it easy to link older serial devices to modern network setups. The adapter features a high-quality alloy port that minimizes interference, enhancing your connection stability. Made from durable ABS material, it is built to withstand wear and tear, ensuring long-lasting use for your networking needs.
YIOVVOM DB9 Serial Adapter with Terminal Wire Range and Screw Type Design
This DB9 Serial Adapter by YIOVVOM features a screw type design and a terminal wire range of 12-24AWG. The adapter is made of metal and electric parts and comes in black and green. It has a total size of 58 x 35 x 21mm and a weight of 30g. The package includes 1 DB9 Adapter with a case and 3 protective covers. The cable hole diameter ranges from 5mm to 10mm, making it versatile for different cable sizes.
DB9 Null Modem Male to Female Slimline Adapter 2 Pack
The DB9 Null Modem Male to Female Slimline Adapter 2 Pack converts standard straight wired cables to null modem wiring with pin 9 open. Its slimline design reduces leverage strain on computer ports, while the UL grade 94V-0 connector insulator satisfies flammability requirements. Additionally, the screws are removable and reversible for easy installation and flexibility.
LuoQiuFa DB9 Female to Female Adapter
The LuoQiuFa DB9 Adapter is a versatile solution for your serial connection needs. Featuring two female connectors, it allows you to easily connect multiple devices, ensuring smooth communication across various equipment. The durable metal iron shell, nickel-plated to resist rust, promises longevity and reliability. Additionally, the 24k gold-plated pins enhance conductivity, providing a secure and efficient connection. This adapter is perfect for linking PLC controllers, touch screens, and CNC machines, making it an essential tool in your tech toolkit.
DTech DB9 to RJ45 Serial Adapter
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.
DTech 6ft USB to RS232 DB9 Female Adapter Cable
The DTech 6ft USB to RS232 DB9 Female Adapter Cable enables you to connect serial devices to your computer via USB. The adapter is compatible with devices such as PCs, routers, GPS systems, barcode scanners, modems, and digital cameras, among others. The cable features a standard USB Type A Male connector and a 9-pin DB9 Female RS-232 serial connector. It also includes the Prolific PL-2303 chipset, which ensures compatibility with a range of systems, including Windows 11, 10, 8, 7, XP, Vista, 2000, 98, MacOS8 or higher, Linux 2.4.0 and later, and other platforms. Please note that the adapter is only compatible with devices that have a 9-pin Male Port.
C2G DB9 Female to DB25 Male Serial RS232 Adapter
The C2G Serial RS232 Adapter is a high-quality male to female cable adapter that allows you to convert an HD15 male port to a DB9 female port. It is designed specifically for older multisync monitors, making it the perfect choice for those who still use legacy devices. The molded design of this adapter ensures a solid connection and provides protection against outside interference. With this adapter, you can quickly and easily connect your hard-wired MultiSync monitor to a 9-pin cable input, ensuring the right connection every time. As a Cables 2 Go brand product, you can trust the quality and reliability of this adapter, backed by over 35 years of experience in connectivity solutions.
OIKWAN USB to RS232 Adapter
The OIKWAN USB Serial Adapter is designed to connect your serial DB9 devices, like modems or printers, to a USB port on your computer. It features a 9-pin female connector, ensuring compatibility with your devices. With its FTDI chipset, this adapter supports a wide range of operating systems, including Windows and Mac OS, making it versatile for various users. The plug-and-play functionality means you can easily start using it without additional power sources, as it draws power directly from your computer. This convenience allows you to streamline your connections quickly and efficiently.
Arnorin DB9 Null Modem Adapter
The Arnorin DB9 Adapter is designed to convert standard straight wired cables into null modem wiring, making it easier for you to connect devices that require this specific setup. With its gold contact plating, you can expect reliable connections, even after multiple uses. The slimline design minimizes strain on your computer ports, protecting them from potential damage. Additionally, the UL grade 94V-0 connector insulator ensures safety by meeting flammability standards, giving you peace of mind while using it. This adapter is a smart choice for anyone needing efficient and secure data transfer.
CableCreation USB to RS232 Adapter
The CableCreation RS232 Adapter is designed to connect your serial DB9 devices, like modems and digital cameras, to a USB port on your computer. With its advanced Prolific PL2303 chipset, it supports a wide range of operating systems, ensuring hassle-free installation. You’ll appreciate the reliable data transfer rate of 1Mbps, which is perfect for transferring information efficiently. Plus, the cable is powered via the USB bus, eliminating the need for an external power source, making it convenient for various applications like cash registers and label printers.
Frequently Asked Questions (FAQs)
1. Is DB9 same as serial port?
What is DB9 port? The DB9 connector (originally named DE-9) is an analog socket, with 9 pins, from the D-Subminiatures (D-Sub) connector family. The DB9 connector is mainly used in serial ports, allowing asynchronous data transmission according to the RS-232 standard (RS-232C).
2. Is a DB9 connector same as RS-232?
Below is the pinout of a typical standard male 9-pin RS232 connector, this connector type is also referred to as a DB9 connector. A computer's serial COM port (DTE) is usually a male port as shown below, and any peripheral devices you connect to this port usually has a female connector (DCE).
3. What is the difference between DB25 and DB9 serial ports?
The D-sub connectors' names are equivalent with the total number of pins that they can hold. For example, DB9 Series Cables contain 9 pins. However, in some cases, a DB25 connector has 4 to 5 loaded pins.
4. What is DB9 serial port?
DB9 connectors were commonly used for serial peripheral devices like keyboards, mice, joysticks, etc. Also they are used on DB9 cable assemblies for data connectivity. Today, the DB9 has mostly been replaced by more modern interfaces such as USB, PS/2, Firewire, and others.
During our db9 female serial adapter research, we found 24 db9 female serial adapter products and shortlisted 10 quality products. We collected and analyzed 25,256 customer reviews through our big data system to write the db9 female serial adapters list. We found that most customers choose db9 female serial adapters with an average price of $7.59.
The db9 female serial adapters are available for purchase. We have researched hundreds of brands and picked the top brands of db9 female serial adapters, including ANMBEST, YIOVVOM, Arnorin, LuoQiuFa, DTECH. The seller of top 1 product has received honest feedback from 91 consumers with an average rating of 4.9.

Mike Davis is a professionally trained electrician with six years of working experience in the electronics industry. He has written an array of web and mobile-based articles for e-magazines and blogs. He loves trying out some novel and popular gadgets and his expertise is in the areas of electronics and computers which is built over many years of working and personal experiences.