Best StarTech.com Serial Cables of 2026

Kenneth Collin Avatar
Kenneth Collin
Last Updated: 4 Feb 2026

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Serial cables are an essential component of any computer system, connecting devices such as modems, printers, and routers to computers. StarTech.com offers a range of high-quality serial cables that are designed to provide reliable connectivity and fast data transfer rates. These cables are made with durable materials and come in various lengths to meet your needs. Whether you need a cable for home or office use, StarTech.com's serial cables are an excellent choice to ensure your devices work seamlessly together.

At a Glance: Our Top Picks

StarTech.com 2m Black DB9 Female to Female Cable Cover #TOP 1
StarTech.com 2m Black DB9 Female to Female Cable
ftb score rating icon 9.9
StarTech 3m RS232 Null Modem Cable Cover #TOP 2
StarTech 3m RS232 Null Modem Cable
ftb score rating icon 9.8
StarTech.com 2m Black DB9 Serial Extension Cable Cover #TOP 3
StarTech.com 2m Black DB9 Serial Extension Cable
ftb score rating icon 9.6

Top 9 StarTech.com Serial Cables

StarTech.com 2m Black DB9 Female to Female Cable

StarTech
SCNM9FF2MBK
Black
6 ft/2 m
StarTech.com 2m Black DB9 Female to Female Cable Cover
StarTech.com 2m Black DB9 RS232 Serial Null Modem Cable F/F - DB9 Female to Female - 9 pin RS232 Null Modem Cable - 2 meter, Black (SCNM9FF2MBK)

The StarTech.com DB9 Null Modem Cable is a 2-metre black cable designed for connecting your serial devices efficiently. With its female-to-female configuration, you can easily transfer files between devices. The high-quality shielding effectively prevents electromagnetic interference, ensuring a stable connection. This means you can enjoy reliable data transmission without interruptions, making your tasks smoother and more efficient.

What We Like
High-quality shielding
2-metre length
Female-to-female configuration
Prevents EMI interference

StarTech 3m RS232 Null Modem Cable

StarTech
9FMNM-3M-RS232-CABLE
Black
9.8 ft
StarTech 3m RS232 Null Modem Cable Cover
StarTech.com 3m RS232 Serial Null Modem Cable, Crossover Serial Cable w/Al-Mylar Shielding, DB9 Serial COM Port Cable Female to Male, Compatible w/DTE Devices, Black, F/M (9FMNM-3M-RS232-CABLE)

The StarTech Null Modem Cable is an essential tool for connecting two DTE devices over a distance of up to 3 metres. Its high-quality construction ensures durability, with tinned wires and aluminium mylar shielding that protect against electromagnetic interference. You will appreciate the screw locking feature, as it prevents accidental disconnections, helping to avoid data loss. Additionally, the cable comes with moulded PVC connectors, which provide strain relief, reducing the risk of damage from bends and twists.

What We Like
Flexible setup configuration
Durable and high-quality construction
Prevents accidental disconnections
Reduces risk of damage
#TOP 3

StarTech.com 2m Black DB9 Serial Extension Cable

StarTech
MXT1002MBK
Black
6 ft/2 m
StarTech.com 2m Black DB9 Serial Extension Cable Cover
StarTech.com 2m Black Straight Through DB9 RS232 Serial Cable - DB9 RS232 Serial Extension Cable - Male to Female Cable (MXT1002MBK)

The StarTech.com DB9 Serial Cable is designed to enhance your connectivity needs. It features a male and female DB9 connector, making it easy to extend your serial connections. The high-quality shielding effectively prevents EMI interference, ensuring a stable and clear signal for your devices. Additionally, the strain relief molding on the connectors protects against wear and tear, providing you with a durable solution for your serial communication requirements.

What We Like
High-quality shielding
Durable strain relief molding
Easy to connect devices
Prevents EMI interference

StarTech DB9 to DB25 Null Modem Cable

SCNM925FM
Gray
10 ft
StarTech DB9 to DB25 Null Modem Cable Cover
StarTech.com SCNM925FM 10 ft Cross Wired DB9 to DB25 Serial Null Modem Cable, F/M, Null Modem Cable, DB-9 (F) to DB-25 (M), 10 ft

The StarTech Null Modem Cable is an essential tool for connecting devices that require a DB-9 (F) to DB-25 (M) configuration. Measuring 10 feet in length, it offers flexibility in positioning your devices without being too restrictive. This cross-wired design ensures that data transmission occurs smoothly, making it ideal for various serial communication applications. Whether you are setting up equipment or troubleshooting connections, this cable provides the reliability you need for seamless operation.

What We Like
Flexible 10-foot length
DB-9 to DB-25 compatibility
Reliable data transmission
Easy device connection
#TOP 5

StarTech.com 3ft DB9 to 3.5mm Serial Cable

StarTech
9M351M-RS232-CABLE
Black
1 meter
StarTech.com 3ft DB9 to 3.5mm Serial Cable Cover
StarTech.com 3ft (1m) DB9 to 3.5mm Serial Cable for Serial Device Configuration, RS232 DB9 Male to 3.5mm Cable for Calibrating Projectors, Digital Signage, TVs via Audio Jack (9M351M-RS232-CABLE)

The StarTech.com DB9 to 3.5mm cable is a 3ft (1m) RS232 serial control cable designed for configuring and calibrating devices like TVs, projectors, and digital signage that require a 3.5mm audio jack connection. Its high-quality construction features 28 AWG copper wires and shielding to prevent EMI interference, ensuring reliable performance. You will appreciate the durable molded PVC connectors that protect against damage from bends and rough handling. Additionally, the cable is compatible with USB-A and USB-C to DB9 serial adapters, making it versatile for various devices.

What We Like
High-quality construction
Durable connectors
Versatile compatibility
Prevents EMI interference
#TOP 6

StarTech.com 1m Black DB9 Serial Null Modem Cable

StarTech
SCNM9FM1MBK
Black
StarTech.com 1m Black DB9 Serial Null Modem Cable Cover
StarTech.com 1 m Black DB9 RS232 Serial Null Modem Cable F/M, DB9 Male to Female, 9 Pin Null Modem Cable, 1x DB9 (M), 1x DB9 (F) - Black

The StarTech.com DB9 Null Modem Cable is an essential tool for connecting your serial devices. With a length of 1 metre, it provides ample reach for your setup. This cable enables you to transfer files efficiently between devices, ensuring a smooth data exchange. Its DB9 Male to Female configuration is perfect for various applications. By using this RS232 Null Modem Cable, you can enhance your device connections and simplify your data transfer processes.

What We Like
Easy device connections
Efficient file transfers
1 metre length
Compatible with various devices
DB9 Male to Female configuration
#TOP 7

StarTech.com Serial Male to Motherboard Cable

StarTech
PNL9M16
Gray
40.64 cm
StarTech.com Serial Male to Motherboard Cable Cover
StarTech.com PNL9M16 9 Pin Serial Male to 10 Pin Motherboard Header Panel Mount Cable, Gray, 16 inch

The StarTech.com Serial Cable is a reliable choice for connecting devices with ease. This 1.3 ft cable features a DB-9 male connector, which is perfect for various serial connections. The 10 pin IDC female connector ensures compatibility with motherboard headers, making installations straightforward. The grey colour adds a sleek touch while also allowing for easy identification among other cables. Users will appreciate the flexibility offered by this cable length, making it ideal for various setups.

What We Like
Durable serial cable
Compatible with motherboards
Convenient 1.3 ft length
Sleek grey design
#TOP 8

StarTech.com 25 Ft Serial Extension Cable

StarTech
MXT100_25
gray
25 ft / 7.5m
StarTech.com 25 Ft Serial Extension Cable Cover
StarTech.com Straight Through Serial Cable (25 Ft, M/F)

The StarTech.com Serial Cable is designed to extend your connection by up to 25 feet, providing you with greater flexibility in positioning your serial devices. Its moulded connectors come with PVC strain relief, which helps prevent the connectors from bending at sharp angles, thereby reducing the risk of damage to the cable. This feature ensures a longer lifespan for your connection. Additionally, the product is compatible with various international standards, giving you the confidence that it can meet your needs regardless of your location.

What We Like
Extends connection up to 25 feet
Moulded connectors for durability
Prevents cable damage
Compatible with international standards
#TOP 9

StarTech Low Profile DB9 Serial Port Bracket

StarTech
PLATE9M16LP
Grey
1 Count (Pack of 1)
StarTech Low Profile DB9 Serial Port Bracket Cover
StarTech.com 1 Port 16in DB9 Serial Port BRacket to 10 Pin Header - Low Profile - low profile DB9 Header - DB9 bRacket (PLATE9M16LP), Grey

The StarTech DB9 Bracket is a low profile serial panel designed to connect DB-9 male ports to 10 pin IDC female headers. Its 1.3 ft length offers flexibility in placement and installation, making it convenient for users to set up serial connections in compact spaces. The grey colour adds a neutral look that blends well with most hardware setups. This product is ideal for those needing a reliable and space-saving solution for serial port connectivity.

What We Like
Low profile design
Flexible 1.3 ft length
DB-9 male to 10 pin IDC female
Neutral grey colour
Buying Guide Image
Editor's Notes

During our StarTech.com serial cable research, we found 34 StarTech.com serial cable products and shortlisted 9 quality products. We collected and analyzed 23,674 customer reviews through our big data system to write the StarTech.com serial cables list. We found that most customers choose StarTech.com serial cables with an average price of £6.02.

The StarTech.com serial cables are available for purchase. The top 9 picks range in price from a low of £3.00 to a high of £18.00, find the one that fits your budget.

Written by
Kenneth Collin Avatar

Kenneth Collin graduated from Imperial College, London, at 22. He is a UX/UI designer, a web developer, and a writer, amongst others. At age 14, Kenneth programmed his first app. Kenneth's app served as a remote control for censored devices. "When I was 8, I would pick up scraps from electronics and try to rebuild or at least fix them," Kenneth said in one of his recent articles on Home repairs for top gadgets.