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Black Box DB25 male to female extension cable 20 ft 28 AWG

Black Box Corporation

Black Box BC00711 DB25 male-female extension printer cable 20 ft 28 AWG

SKU CH-W483-MVFVY MPN BC00711

A 20 ft DB25 male-to-female serial extension cable with 28 AWG conductors and molded shielding

  • Product typeConsumer Electronics
  • Extends serial connections up to 20 ft with DB25 male-to-female ends
  • 28 AWG conductors deliver reliable RS-232 signal integrity over distance
  • Molded shielding reduces electromagnetic interference for stable data transfer
  • Lifetime warranty reflects manufacturer confidence in build quality
  • 0 metre length suits desktop and industrial equipment placement

Extension cable for legacy serial ports

This Black Box BC00711 cable extends an existing RS-232 connection by 20 ft using 28 AWG conductors. It is intended for users who need to bridge a longer distance between a desktop computer and a serial peripheral. The DB25 male-to-female layout plugs directly into standard 25-pin ports without adapters. Molded strain relief and shielding help maintain signal integrity over the full run.

Molded DB25 connectors with shielding

Both ends feature fully moulded 25-pin DB-25 shells that resist cable pull and connector fatigue in daily use. The male end mates with a host port while the female end accepts an existing cable, creating a secure inline extension. Integrated shielding reduces electromagnetic interference from nearby equipment. The 6.0 m length provides flexible routing around workstations or through cable management channels.

28 AWG gauge for RS-232 signal runs

The 28 AWG wire gauge determines the maximum reliable distance for RS-232 signalling, making this 20 ft extension suitable for typical desktop-to-peripheral links. Builders needing longer runs or higher-speed data rates should verify voltage drop limits against their specific hardware. This cable does not convert signal types or adapt to other connector formats. It serves solely as a straight-through serial extension.

How it compares

Measured against everything we stock in USB & Parallel Printer Cables, at today’s prices. Recalculated every night.

Price $27.99
Pricier than about 82% of the 127 comparable items (median $11.99).

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Specifications

Product
Brand nameBlack Box
Product typeConsumer Electronics
Size & build
Shipping weight0.91 kg
Package size330 × 178 × 76 mm

Questions about this item

What does the RS-232 DB25 interface cap in practice?

The cable carries RS-232 serial signals through all 25 pins; throughput is limited by the connected serial ports, not by the cable itself.

What physical space does the moulded DB25 male plug need behind the port?

The moulded 25-pin DB25 male connector requires enough rear clearance for its hood; measure the depth of your port recess before routing the 20 ft cable.

How is the extension installed, and what step is often missed?

Connect the DB25 male end to the desktop computer's serial port and the DB25 female end to the device cable; secure both thumbscrews so the shielded 28 AWG link stays seated.

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