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Updated: 19 Apr 2026

10 Best Serial Adapters D-sub

#1 Best Pick
2PCS D-sub DB9 Interface Breakout Board Connector 9-pin 2-Row Female RS-232 Serial Port Solderless Terminal Block Adapter

2PCS D-sub DB9 Interface Breakout Board Connector 9-pin 2-Row Female RS-232 Serial Port Solderless Terminal Block Adapter

Brand: KRYZON
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  • This breakout adapter is solderless. No soldering or crimping required.
  • The wire board is printed with wire number which is convenient for quick wiring.
  • Simple and quick connections installation. These adapter boards can be mounted directly to the equipment without using extension cables.
  • Used for experimentation or prototype work with RS-232 serial ports, I/O cards, and any other device that uses a DB9 connector.
  • The breakout board can be used for automatic control equipment, industrial control equipment, cash register, tax control machine, computer, etc.
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#2 Best Value
Create idea DB25 Adapter RS232 D-SUB Serial Adapters 25-pin Solderless Serial Port Adapter to Terminal Connector Signal Module Long Bolts and Nuts with Case, Female

Create idea DB25 Adapter RS232 D-SUB Serial Adapters 25-pin Solderless Serial Port Adapter to Terminal Connector Signal Module Long Bolts and Nuts with Case, Female

Brand: Create idea
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  • [Versatile Connector] This DB25 connector is perfect for various applications, including automatic control devices, industrial control equipment, cash registers, tax control machines, and computers.
  • [Durable Design] Featuring a secure two-hole latch structure, this connector is easy to open and close, ensuring a firm and safe connection.
  • [Optimal Dimensions] With a size of 59x56x23.2mm, it's compact yet effective. Made from a combination of plastic and metal, it's built to last.
  • [Effortless Setup] Same side wiring, no welding required. Simply use a small screwdriver to open the terminal, insert the stranded or solid wire, and retighten. It's eco-friendly with insulated wiring terminals.
  • [Wide Compatibility] This connector is compatible with a range of DB15 serial communication devices, including RS9/485/422 equipment like PLCs, access control systems, touch screens, programmers, and data converters.
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#3 Budget Pick
VGOL 2Pcs DB9 Male to Female Breakout Board Rs232 D-Sub Serial to 9 Pin Terminal for Automatic Industrial Control Equipment Cash Register

VGOL 2Pcs DB9 Male to Female Breakout Board Rs232 D-Sub Serial to 9 Pin Terminal for Automatic Industrial Control Equipment Cash Register

Brand: VGOL
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  • Product Features: DB9 female and male in one breakout board, one end is DB9 male, the other end is DB9 female. Convert DB9 female to DB9 male for serial applications.
  • Applicability: Wiring terminals is easier than soldering wires to connectors. Can be used for testing purposes and checking pinouts, cables, or any device with RS232 interface.
  • Wide Application: This DB9 breakout board connects various serial devices. Such as automatic control equipment, industrial control equipment, cash registers, computers and tax control machines, digital cameras, PLCs, PDAs, modems, set-top boxes, barcode machines, industrial measuring instruments and other equipment for communication.
  • Easy to install: Just use a small screwdriver to open the terminal, push the stranded or solid wire in and tighten it again. Save the trouble of soldering and no need to buy expensive tools. Save a lot of time and money.
  • Product List: Product include a total of 2pcs Male To Female Breakout Board, which can completely meet your daily use needs and replacement.
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#4 Top Choice
xiwai DB9P 90 Degree Down Angled Gender Changer D-Sub 9Pin RS232 Male to Female Connector Serial Port Extension Adapter

xiwai DB9P 90 Degree Down Angled Gender Changer D-Sub 9Pin RS232 Male to Female Connector Serial Port Extension Adapter

Brand: xiwai
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  • Down Right Angled 90 degree extension adapter
  • The angled type Allowing you to connect it to a female port, even if space around the port is limited.
  • RS232 DB 9pin male with screw nuts.
  • RS232 DB 9pin male with thumberscrews.
  • xiwai DB9P 90 Degree Down Angled Gender Changer D-Sub 9Pin RS232 Male to Female Connector Serial Port Extension Adapter
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#5 Popular Choice
Create idea DB25 Adapter RS232 D-SUB Serial Adapters 25-pin Solderless Serial Port Adapter to Terminal Connector Signal Module Long Bolts and Nuts with Case, Male

Create idea DB25 Adapter RS232 D-SUB Serial Adapters 25-pin Solderless Serial Port Adapter to Terminal Connector Signal Module Long Bolts and Nuts with Case, Male

Brand: Create idea
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  • [Versatile Connector] This DB25 connector is perfect for various applications, including automatic control devices, industrial control equipment, cash registers, tax control machines, and computers.
  • [Durable Design] Featuring a secure two-hole latch structure, this connector is easy to open and close, ensuring a firm and safe connection.
  • [Optimal Dimensions] With a size of 59x56x23.2mm, it's compact yet effective. Made from a combination of plastic and metal, it's built to last.
  • [Effortless Setup] Same side wiring, no welding required. Simply use a small screwdriver to open the terminal, insert the stranded or solid wire, and retighten. It's eco-friendly with insulated wiring terminals.
  • [Wide Compatibility] This connector is compatible with a range of DB15 serial communication devices, including RS9/485/422 equipment like PLCs, access control systems, touch screens, programmers, and data converters.
Check latest price on Amazon
#6 Top Pick
tunghey 2 Pack DB9 Breakout Connector,DB9 Solderless RS232 D-SUB Male Serial Adapters 9-Pin Port White Adapter to Terminal Connector Signal Module with case (Female)

tunghey 2 Pack DB9 Breakout Connector,DB9 Solderless RS232 D-SUB Male Serial Adapters 9-Pin Port White Adapter to Terminal Connector Signal Module with case (Female)

Brand: tunghey
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  • 💗【DB9 adapter】: terminal wire range : 12-24AWG
  • 💗【Design】: Screw Type;No welding required, type environmental protection copper terminal design, no need for soldering iron and cumbersome tools, easy wiring. The housing is designed with a folding buckle for easy assembly and disassembly without tools.
  • 💗【Total Size】: 58 x 35 x 21mm/2.3" x 1.4" x 0.83"(L*W*H) Cable Hole Dia. : 5mm/0.2'' 6mm/0.23'' 7mm/0.27'' 10mm / 0.4"
  • 💗【Color】 : White, Green;Weight : 30g ; Material : Metal,Electric Part
  • 💗【What you get】: We provide this 2 Pack DB9 Breakout Connector with an 18-Month worry-free period and 24/7 friendly client consultation, if you have any questions, we will resolve your issue within 24 hours
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#7 Top Pick
xiwai DB9P 90 Degree Up Angled Gender Changer D-Sub 9Pin RS232 Male to Female Connector Serial Port Extension Adapter

xiwai DB9P 90 Degree Up Angled Gender Changer D-Sub 9Pin RS232 Male to Female Connector Serial Port Extension Adapter

Brand: xiwai
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  • RS232 DB 9pin male with screw nuts.
  • RS232 DB 9pin male with thumberscrews.
  • Up Angled 90 degree extension adapter
  • The angled type Allowing you to connect it to a female port, even if space around the port is limited.
  • xiwai DB9P 90 Degree Up Angled Gender Changer D-Sub 9Pin RS232 Male to Female Connector Serial Port Extension Adapter
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#8 Top Pick
tunghey 2 Pack DB9 Breakout Connector,DB9 Solderless RS232 D-SUB Male Serial Adapters 9-Pin Port White Adapter to Terminal Connector Signal Module with case (Male)

tunghey 2 Pack DB9 Breakout Connector,DB9 Solderless RS232 D-SUB Male Serial Adapters 9-Pin Port White Adapter to Terminal Connector Signal Module with case (Male)

Brand: tunghey
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  • 💗【DB9 adapter】: terminal wire range : 12-24AWG
  • 💗【Design】: Screw Type;No welding required, type environmental protection copper terminal design, no need for soldering iron and cumbersome tools, easy wiring. The housing is designed with a folding buckle for easy assembly and disassembly without tools.
  • 💗【Total Size】: 58 x 35 x 21mm/2.3" x 1.4" x 0.83"(L*W*H) Cable Hole Dia. : 5mm/0.2'' 6mm/0.23'' 7mm/0.27'' 10mm / 0.4"
  • 💗【Color】 : White, Green;Weight : 30g ; Material : Metal,Electric Part
  • 💗【What you get】: We provide this 2 Pack DB9 Breakout Connector with an 18-Month worry-free period and 24/7 friendly client consultation, if you have any questions, we will resolve your issue within 24 hours
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#9 Top Pick
DB9 Male Female Connector Adapter, Serial D-SUB 9Pin 2 Row to Terminal Breakout Board Port Solderless Block Adapter Signal Module Screw Interface Plate for RS232 RS485

DB9 Male Female Connector Adapter, Serial D-SUB 9Pin 2 Row to Terminal Breakout Board Port Solderless Block Adapter Signal Module Screw Interface Plate for RS232 RS485

Brand: Leopacat
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  • 9 Pins Design: DB9 male connector, screw terminal for all 9 pins, all copper base more antioxidative; 9 pin 9 hole conversion board, contacts provide connections with repeated mating cycles
  • Good Conversion Performance: Screw terminal for RS232 using selected good quality components, come with high conversion performance, smooth communication; DB9 adapter the terminal block area is clearly marked making proper termination virtually foolproof
  • Stable: DB9 breakout connector pure copper plated joint, fine solder joints, to plug, and good ; Serial terminal breakout board come with stable structure, excellent performance and long service life
  • Easy to Use: Serial 9 pin connector, simple and quick connections installation, no welding required; Interface breakout board connector, terminal block design with set screws provides electrical connections utilizing no special tools
  • Widely Applications: Solderless terminal block adapter used for experimentation or prototype work with RS-232 serial ports; Terminal connector signal module suit any other device that uses a DB9 connector; Such as computer and tax control machine, digital camera and other equipment for communication
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#10 Top Pick
Xiwai DB15 Serial Adapter D-SUB 15 Pin RS232 D Subminiature Adapter Male to Female with Screw Nuts DB Male to 90 Degree Angled

Xiwai DB15 Serial Adapter D-SUB 15 Pin RS232 D Subminiature Adapter Male to Female with Screw Nuts DB Male to 90 Degree Angled

Brand: xiwai
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  • DB15 Adapter: The 15-pin male connector with nuts and the socket with screws. The 15 pin plug with nuts and the socket with screws.
  • Functional functions: D-sub ports are used to connect external devices to a computer. They are an older connection method, but some modern computers still contain them.
  • 【Application】D-sub connectors are basic yet popular input output connectors used in various applications in telecommunications, data, consumer, industrial, military, instrumentation and medical fields.
  • Note: The adapter does not work for HDB15 pin VGA port.
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