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Black 6 ft serial cable with DB9 female to DB25 male gold connectors

Tripp Lite

Tripp Lite P456-006 6 ft Null Modem DB9F to DB25M Serial Cable

SKU CH-HHAM-SRQGV MPN P456-006

Six-foot null modem cable links DB9 and DB25 serial ports with foil shielding and gold-plated connectors

  • Connector count2
  • Connector detailsDB9 Female to DB25 Male
  • Connector genderFemale to Male
  • Product typeSerial (COM)
  • Product colorBlack
  • Overall length6 ft (1.83 m)
  • Null modem link connects two serial devices directly
  • Foil shielding blocks EMI and RFI interference
  • Gold-plated contacts maintain reliable signal conductivity
  • DB9 female to DB25 male fits legacy ports
  • Six-foot length gives flexible placement options

Six-foot null-modem link

This six-foot serial cable carries a DB9 female connector on one end and a DB25 male connector on the other, wired for null-modem communication between two DTE devices. Gold-plated contacts and foil shielding protect the signal from electromagnetic interference. The moulded strain reliefs add durability for repeated connection cycles. It suits technicians linking legacy industrial gear, point-of-sale terminals or older networking equipment.

Use cases and limits

The cable serves installers who need a direct DB9-to-DB25 cross-over without a separate adapter block. It will not help anyone whose ports are both DB9 or both DB25, nor users who require a straight-through pin-out for modem-to-DTE links. Buyers needing longer runs or a different gender combination should look at other cable assemblies.

Deciding specification

The defining detail is the DB9 female to DB25 male null-modem pin-out, which determines whether the cable matches the two ports you must join. If your devices present any other connector pairing or require straight-through wiring, this part will not fit the application.

How it compares

Measured against everything we stock in RS-232 Serial Cables, at today’s prices. Recalculated every night.

Price $5.99
Cheaper than about 98% of the 93 comparable items (median $21.99).

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Specifications

Product
Brand nameTripp Lite
Model nameP456-006
Product typeSerial (COM)
Product colorBlack
Ports & slots
Connector count2
Connector detailsDB9 Female to DB25 Male
Connector genderFemale to Male
Size & build
Overall length6 ft (1.83 m)

Questions about this item

Should I choose the 6 ft DB9F-to-DB25M cable or a different length for my null modem link?

The 6 ft length suits most desk-to-device runs; select a longer cable only if the two serial ports sit farther apart.

What does the null modem wiring actually do when I plug this cable into two serial ports?

It crosses transmit and receive lines so two DTE devices such as PCs or terminals can communicate directly without a modem.

How does the DB9 female to DB25 male connector pair limit the devices I can connect?

One end fits a 9-pin serial port, the other fits a 25-pin serial port; both ports must use the matching gender for a secure connection.

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