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HomeSerial Cables

10 Best Serial Cables Of 2026

Serial Cables — Reviews, Recommendations & Updated Buying Guide May 2026

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🏆Our Top Pick
DTECH DB9 RS232 Serial Cable Male to Female Extension Null Modem Cord Cross TX/RX line for Data Communication (5 Feet
01
9.9
Exceptional
(5,404 reviews)
🔥 8 interested

DTECH DB9 RS232 Serial Cable Male to Female Extension Null Modem Cord Cross TX/RX line for Data Communication (5 Feet

DTECH
DISCOUNTED TODAY

Why We Love It

Male-to-Female configuration simplifies legacy equipment connections
Cross-wired design eliminates swapped TX/RX pin headaches
5-foot length spans equipment without excessive slack
RS232 reliability maintains data integrity across systems
9.9
Exceptional
(5,404 reviews)
🔥 8 interested
Available at AmazonShow Offer
UGREEN USB to RS232 Adapter Serial Cable DB9 Male 9 Pin with PL2303 Chipset RS-232 Converter Cable for Windows 10 8.1 8 7 XP Vista
02
9.6
Exceptional
(4,485 reviews)

UGREEN USB to RS232 Adapter Serial Cable DB9 Male 9 Pin with PL2303 Chipset RS-232 Converter Cable for Windows 10 8.1 8 7 XP Vista

UGREEN
DISCOUNTED TODAY

Why We Love It

PL2303 chipset delivers rock-solid legacy device connectivity
1-meter length eliminates desk clutter without reaching limitations
Works seamlessly across Windows, Mac, and Linux ecosystems
9.6
Exceptional
(4,485 reviews)
Available at AmazonShow Offer
EWINNER 4pack SATA Serial Ata Cable for Hard Drive/PC/Laptop Straight HDD SDD Data Cable with Locking Latch for SATA HDD SSD CD Driver CD Writer
03
9.3
Excellent
(520 reviews)

EWINNER 4pack SATA Serial Ata Cable for Hard Drive/PC/Laptop Straight HDD SDD Data Cable with Locking Latch for SATA HDD SSD CD Driver CD Writer

DISCOUNTED TODAY

Why We Love It

4-pack means never hunting for another SATA cable again
Locking latch prevents accidental disconnects during intense transfers
Straight connectors fit tight spaces in modern compact builds
9.3
Excellent
(520 reviews)
Available at AmazonShow Offer
DTech 5 ft RS-232 Extension Cable – DB9 Female-to-Female
04
9.1
Excellent
(4,103 reviews)

DTech 5 ft RS-232 Extension Cable – DB9 Female-to-Female

DTech
DISCOUNTED TODAY

Why We Love It

5 feet of shielded protection eliminates interference and signal loss
Gold-plated pins withstand thousands of connection cycles flawlessly
30 AWG wire ensures professional-grade transmission reliability
9.1
Excellent
(4,103 reviews)
Available at AmazonShow Offer
Melfi 2Feet USB to Serial RS232 Adapter Cable PL2303 Chipset DB9 (9-Pin) Serial Converter – Compatible with Windows
05
8.9
Very Good
(4,371 reviews)

Melfi 2Feet USB to Serial RS232 Adapter Cable PL2303 Chipset DB9 (9-Pin) Serial Converter – Compatible with Windows

Melfi
DISCOUNTED TODAY

Why We Love It

2-foot compact design perfect for portable legacy device setups
PL2303 chipset guarantees instant recognition on any system
Stable COM port connection resurrects decades-old equipment instantly
8.9
Very Good
(4,371 reviews)
Available at AmazonShow Offer
DB9 9pin Male to Female RS232 Serial Extension Cable-1.5M
06
8.7
Very Good
(3,104 reviews)

DB9 9pin Male to Female RS232 Serial Extension Cable-1.5M

DB9
DISCOUNTED TODAY

Why We Love It

1.5-meter reach extends connections across entire workspace
Male-to-Female pairing solves extension needs without adapters
Straightforward wiring restores communication with minimal hassle
8.7
Very Good
(3,104 reviews)
Available at AmazonShow Offer
Jiawu Serial Cable PVC DB9 Male to DC3.5mm Male Plug and Play Compact Efficient for Monitors
07
8.5
Very Good
(4,587 reviews)

Jiawu Serial Cable PVC DB9 Male to DC3.5mm Male Plug and Play Compact Efficient for Monitors

Jiawu
DISCOUNTED TODAY

Why We Love It

DC3.5mm connector unlocks monitor compatibility others can't touch
Compact PVC build handles frequent connections without wearing out
Plug-and-play design eliminates driver hunting forever
8.5
Very Good
(4,587 reviews)
Available at AmazonShow Offer
DTECH DB9 RS232 Serial Cable Male to Female Null Modem Cord Full Handshaking 7 Wire Crossover for Data Communication (5 Feet
08
8.4
Good
(2,215 reviews)

DTECH DB9 RS232 Serial Cable Male to Female Null Modem Cord Full Handshaking 7 Wire Crossover for Data Communication (5 Feet

DTECH
DISCOUNTED TODAY

Why We Love It

5 feet extends through office layouts without tension stress
Full handshaking with 7-wire crossover handles complex data flows
Null modem configuration crosses signals for true device communication
8.4
Good
(2,215 reviews)
Available at AmazonShow Offer
Serial Adapter Cable 1.5 Feet USB to DB9 RS232 Desktop Adapter Cord USB to Serial Cable Adopter for Connecting Digital Cameras
09
8.2
Good
(1,560 reviews)

Serial Adapter Cable 1.5 Feet USB to DB9 RS232 Desktop Adapter Cord USB to Serial Cable Adopter for Connecting Digital Cameras

Serial
DISCOUNTED TODAY

Why We Love It

1.5 feet keeps cameras and scanners perfectly positioned nearby
Connects barcode readers, modems, and label writers effortlessly
Blue color coding prevents cable confusion in crowded setups
8.2
Good
(1,560 reviews)
Available at AmazonShow Offer
DB9 RS232 Serial Cable Male to Male Null Modem Cord Full Handshaking 7 Wire Crossover for Data Communication Compatible with Computer Network Switch Router 1.5 Feet
10
8
Good
(3,769 reviews)

DB9 RS232 Serial Cable Male to Male Null Modem Cord Full Handshaking 7 Wire Crossover for Data Communication Compatible with Computer Network Switch Router 1.5 Feet

DB9
DISCOUNTED TODAY

Why We Love It

1.5-foot Male-to-Male setup ready for network routing immediately
7-wire crossover configuration tackles demanding data communication
Null modem wiring bridges devices that normally refuse to talk
8
Good
(3,769 reviews)
Available at AmazonShow Offer

Quick Pick

10 Best Serial Cables Of 2026

Quick Pick

#1
DTECH DB9 RS232 Serial Cable Male to Female Extension Null Modem Cord Cross TX/RX line for Data Communication (5 Feet, Black)

DTECH DB9 RS232 Serial Cable Male to Female Extension Null Modem Cord Cross TX/RX line for Data Communication (5 Feet, Black)

View Details
#2
UGREEN USB to RS232 Adapter Serial Cable DB9 Male 9 Pin with PL2303 Chipset RS-232 Converter Cable for Windows 10 8.1 8 7 XP Vista, Mac OS, Linux-1M

UGREEN USB to RS232 Adapter Serial Cable DB9 Male 9 Pin with PL2303 Chipset RS-232 Converter Cable for Windows 10 8.1 8 7 XP Vista, Mac OS, Linux-1M

View Details
#3
eWINNER 4pack SATA Serial Ata Cable for Hard Drive/PC/Laptop Straight HDD SDD Data Cable with Locking Latch for SATA HDD SSD CD Driver CD Writer

eWINNER 4pack SATA Serial Ata Cable for Hard Drive/PC/Laptop Straight HDD SDD Data Cable with Locking Latch for SATA HDD SSD CD Driver CD Writer

View Details
#4
DTech 5 ft RS-232 Extension Cable – DB9 Female-to-Female, Straight-Through, Shielded with Gold-Plated Pins, 30 AWG

DTech 5 ft RS-232 Extension Cable – DB9 Female-to-Female, Straight-Through, Shielded with Gold-Plated Pins, 30 AWG

View Details
#5
Melfi 2Feet USB to Serial RS232 Adapter Cable PL2303 Chipset DB9 (9-Pin) Serial Converter – Compatible with Windows, Mac & Linux – Stable USB to COM Port Connection for Legacy Devices

Melfi 2Feet USB to Serial RS232 Adapter Cable PL2303 Chipset DB9 (9-Pin) Serial Converter – Compatible with Windows, Mac & Linux – Stable USB to COM Port Connection for Legacy Devices

View Details
#6
DB9 9pin Male to Female RS232 Serial Extension Cable-1.5M

DB9 9pin Male to Female RS232 Serial Extension Cable-1.5M

View Details
#7
Jiawu Serial Cable PVC DB9 Male to DC3.5mm Male Plug and Play Compact Efficient for Monitors

Jiawu Serial Cable PVC DB9 Male to DC3.5mm Male Plug and Play Compact Efficient for Monitors

View Details
#8
DTECH DB9 RS232 Serial Cable Male to Female Null Modem Cord Full Handshaking 7 Wire Crossover for Data Communication (5 Feet, Black)

DTECH DB9 RS232 Serial Cable Male to Female Null Modem Cord Full Handshaking 7 Wire Crossover for Data Communication (5 Feet, Black)

View Details
#9
Serial Adapter Cable 1.5 Feet USB to DB9 RS232 Desktop Adapter Cord USB to Serial Cable Adopter for Connecting Digital Cameras, Modems, Barcode Readers, Tablets, Label Writers and More (Blue)

Serial Adapter Cable 1.5 Feet USB to DB9 RS232 Desktop Adapter Cord USB to Serial Cable Adopter for Connecting Digital Cameras, Modems, Barcode Readers, Tablets, Label Writers and More (Blue)

View Details
#10
DB9 RS232 Serial Cable Male to Male Null Modem Cord Full Handshaking 7 Wire Crossover for Data Communication Compatible with Computer Network Switch Router 1.5 Feet

DB9 RS232 Serial Cable Male to Male Null Modem Cord Full Handshaking 7 Wire Crossover for Data Communication Compatible with Computer Network Switch Router 1.5 Feet

View Details

Buying Guide: Serial Cables

📋 Table of Contents

  1. 1.What's the difference between DB9 and DB25 serial cables?
  2. 2.How do I know what cable length I need?
  3. 3.Should I buy a shielded or unshielded serial cable?
  4. 4.What's the difference between a null modem and a straight-through cable?
  5. 5.Is it worth buying a premium or name-brand serial cable?

1What's the difference between DB9 and DB25 serial cables?

DB9 is the smaller, more common connector used in modern equipment like industrial devices and older computers, while DB25 is the larger legacy connector found in vintage machinery. Choose based on the ports your devices actually have—they're not interchangeable without adapters.

2How do I know what cable length I need?

Measure the distance between your devices, then add a little extra for routing around obstacles—most people find 3 to 5 meters covers home and office setups. Longer cables (10+ meters) can lose signal quality, so if you need that distance, look for shielded or active cables.

3Should I buy a shielded or unshielded serial cable?

Shielded cables reduce electromagnetic interference and are worth the small extra cost if your devices sit near power cables, wireless routers, or other electronics. Unshielded works fine for clean environments with short distances between devices.

4What's the difference between a null modem and a straight-through cable?

A straight-through cable connects similar devices (computer to modem), while a null modem reverses the transmit and receive pins to connect two computers directly. Check your device manual or ask the seller which type you need—using the wrong one means no connection at all.

5Is it worth buying a premium or name-brand serial cable?

Better brands typically offer better shielding, more durable connectors, and longer warranties, which matters if you're connecting critical industrial or medical equipment. For occasional use with standard devices, a basic cable does the job fine as long as it matches your connector type and length needs.

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