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Grey DB25 male to RJ45 modular adapter 1158

Monoprice Inc.

Monoprice Inc. 1158 DB25 Male to RJ-45 Modular Adapter

SKU CH-J71E-4X82B MPN 1158

Connects a DB25 male port to an RJ-45 jack for eight-conductor cable runs

  • Extends DB25 links over standard CAT5 cabling
  • 25-pin male connector plugs straight into parallel ports
  • 8-pin RJ-45 jack accepts eight-conductor patch cables
  • Model 1158 built to Monoprice 101158 series specs
  • Lifetime warranty backs the adapter for long-term use

DB25 Male to RJ-45 Adapter

The Monoprice 1158 adapter converts a DB25 male parallel port into an RJ-45 modular jack. It allows an 8-conductor CAT5 cable to extend the connection over longer distances. This suits technicians maintaining legacy industrial or networking equipment that still relies on DB25 interfaces.

Passive Wiring Under Sustained Use

As a purely passive modular adapter, it introduces no active circuitry or signal conditioning. Signal integrity over extended runs depends entirely on the quality and length of the CAT5 cable used. It behaves consistently as a straight-through physical wiring interface without degradation from heat or processing load.

Compact Grey Housing for Patch Panels

The moulded grey housing fits standard DB25 cutouts and secures with typical thumbscrews. The RJ-45 jack accepts standard modular plugs for quick patch-panel or wall-plate termination. Its compact form factor sits flush against equipment, leaving adjacent ports accessible in dense rack or panel environments.

Highlights

  • Extends DB25 links over standard CAT5 cabling
  • 25-pin male connector plugs straight into parallel ports
  • 8-pin RJ-45 jack accepts eight-conductor patch cables
  • Model 1158 built to Monoprice 101158 series specs
  • Lifetime warranty backs the adapter for long-term use

Specifications

BrandMonoprice
Series101158
Model101158
Part Number101158
Shipping weight0.23 kg
Package size102 × 76 × 13 mm

Questions about this item

Does the DB25 male connector draw any power or generate heat during continuous use?

The adapter is a passive pin-to-pin device with no active electronics, so it consumes no power and produces no measurable heat.

What cable type must I already have to use this 8-pin modular adapter?

You need an 8-conductor CAT5 or equivalent twisted-pair cable terminated with RJ-45 plugs on both ends.

Will this DB25-to-RJ-45 adapter work with a legacy parallel printer that uses a standard 25-pin port?

Yes, the DB25 male end mates directly with a standard 25-pin parallel port, while the RJ-45 jack accepts the CAT5 extension cable.

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