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Black DB25 male to RJ45 female modular adapter

STARTECH

STARTECH GC258MF DB25 to RJ45 Modular Adapter M/F

SKU CH-BVJP-RY3SM MPN GC258MF

Converts a DB25 male port to an RJ45 female socket for modular RS232, RS422 and RS485 serial links

  • Adapter typeDB25 to RJ45
  • Product colorBlack
  • DetailsConnectors: DB25 Male, RJ45 Female Color: Gray
  • Product weight0.9375
  • Converts DB25 male to RJ45 female for modular serial links
  • Supports RS232, RS422 and RS485 wiring schemes
  • Enables custom pin-outs for specialised serial installations
  • Compact 0.9375 oz adapter fits tight equipment racks
  • Durable construction rated for long-term industrial use

DB25 to RJ45 serial adapter

The StarTech GC258MF converts a DB25 male connector to an RJ45 female port for modular RS232, RS422 and RS485 links. It enables custom serial cabling without soldering and weighs 0.9375 units.

Plug-and-play gender change

The adapter turns a fixed DB25M interface into a standard RJ45F jack so you can patch with off-the-shelf Ethernet-style cables. No drivers, power or configuration are required.

Industrial and legacy integrators

Suits engineers maintaining RS232, RS422 or RS485 equipment that terminates on DB25 panels. Not for installers who need DB9, USB or Ethernet signalling, or who require shielded housings beyond the basic moulded body.

How it compares

Measured against everything we stock in USB-C Multiport Adapters, at today’s prices. Recalculated every night.

Price $9.99
Cheaper than about 92% of the 89 comparable items (median $18.99).

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Specifications

Product
Brand nameStarTech.com
Model nameGC258MF
Product colorBlack
Adapter typeDB25 to RJ45
Size & build
Cable lengthNo
Shipping weight0.03 kg
Package size197 × 119 × 18 mm

Questions about this item

Will the DB25 male pins or RJ45 female jack wear out and need replacement?

The adapter has no moving parts; the DB25 male and RJ45 female contacts are solid metal and rated for thousands of mating cycles under normal handling.

What signal degradation appears first on a long RS485 run through this adapter?

The adapter itself adds no active circuitry, so the first limit is the cable length and termination of the RS485 bus, not the DB25-to-RJ45 interface.

Does the adapter get warm or draw extra power when used continuously for serial data?

It is a passive connector with no electronics, so it generates no heat and consumes no power during sustained RS232, RS422 or RS485 traffic.

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