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10 bestNull Modemsof December 2025

112M consumers helped this year.

1

Kentek 6 Feet FT DB9 Female to DB25 Female Null Modem Serial Printer Cable Cord 28 AWG F/F Molded D-SUB RS-232 Crossover 9 to 25 Pin for DTE PC Mac Linux Data Transmission Communication

Kentek 6 Feet FT DB9 Female to DB25 Female Null Modem Serial Printer Cable Cord 28 AWG F/F Molded D-SUB RS-232 Crossover 9 to 25 Pin for DTE PC Mac Linux Data Transmission Communication

Kentek 6 Feet FT DB9 Female to DB25 Female Null Modem Serial Printer Cable Cord 28 AWG F/F Molded D-SUB RS-232 Crossover 9 to 25 Pin for DTE PC Mac Linux Data Transmission Communication

KENTEK

10.0

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2

DTECH DB9 RS232 Serial Cable Male to Female Extension Null Modem Cord Cross TX RX line for Data Communication (10 Feet, Black)

DTECH DB9 RS232 Serial Cable Male to Female Extension Null Modem Cord Cross TX RX line for Data Communication (10 Feet, Black)

DTECH DB9 RS232 Serial Cable Male to Female Extension Null Modem Cord Cross TX RX line for Data Communication (10 Feet, Black)

DTech

10.0

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3

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

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

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

YUTUKI

9.9

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4

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)

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

DTech

9.8

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5

StarTech.com DB9 RS232 Serial Null Modem Adapter - M/F

StarTech.com DB9 RS232 Serial Null Modem Adapter - M/F

StarTech.com DB9 RS232 Serial Null Modem Adapter - M/F

StarTech

9.6

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6

2m Black DB9 Null Modem Cable

2m Black DB9 Null Modem Cable

2m Black DB9 Null Modem Cable

StarTech

9.4

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7

Mini Null Modem Adapter, DB9 Female to DB9 Female

Mini Null Modem Adapter, DB9 Female to DB9 Female

Mini Null Modem Adapter, DB9 Female to DB9 Female

CableWholesale

9.2

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8

DB9 null modem female to female slimline data transfer serial port adapter 10 Pack

DB9 null modem female to female slimline data transfer serial port adapter 10 Pack

DB9 null modem female to female slimline data transfer serial port adapter 10 Pack

KINGDEE INC

8.9

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9

DB9 null modem female to female slimline data transfer serial port adapter 5 Pack

DB9 null modem female to female slimline data transfer serial port adapter 5 Pack

DB9 null modem female to female slimline data transfer serial port adapter 5 Pack

KINGDEE INC

8.7

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10

DB9 null modem adapter male to female slimline data transfer serial port adapter 5 Pack

DB9 null modem adapter male to female slimline data transfer serial port adapter 5 Pack

DB9 null modem adapter male to female slimline data transfer serial port adapter 5 Pack

KINGDEE INC

8.4

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