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Black 3.5mm 4-position male plug splitting to two 3-position female jacks

STARTECH

STARTECH MUYHSMFF 3.5mm 4 Position to 2x 3 Position Adapter

SKU CH-P40J-146AC

Splits a single 3.5mm combo port into separate headphone and microphone jacks for headsets with dual plugs

  • TypeStereo Cables
  • ColorBlack
  • Length0 ft.
  • Connector Number3
  • Connector DetailConnector A: 1 - 3.5 mm Mini-Jack (4 Position) Male Connecto
  • Terminal GenderMale to Female

Style Cable

  • Splits one 3.5mm 4-position port into separate headphone and microphone connections
  • Connects headsets with dual 3-position plugs to a single combined audio jack
  • Enables external microphone and powered speakers through one laptop port
  • Nickel-plated straight connectors with 28 AWG wiring for clear signal transfer
  • Weighs .32 oz in a compact PVC-jacketed design

4-Position to Dual 3-Position Headset Adapter

The StarTech.com MUYHSMFF adapter converts a single 3.5mm 4-position audio port into separate 3.5mm headphone and microphone jacks. It enables headsets with distinct plugs to work with laptops, tablets, and phones that only provide a combined TRRS socket. The compact dongle uses a straight male 4-pole plug and two female 3-pole sockets.

Nickel-Plated 28 AWG Cable with PVC Jacket

The adapter is built with 28 AWG wiring, nickel-plated contacts, and a black PVC jacket for basic durability. Its lightweight design at 0.32 oz adds minimal bulk to a mobile setup. No software or drivers are required; the passive wiring simply routes the audio and microphone signals to the correct contacts on the host device.

Users with Split-Plug Headsets on Combined Ports

This suits anyone connecting a dual-plug gaming or office headset to a modern ultrabook, smartphone, or tablet that lacks separate mic and headphone jacks. It also supports a standalone microphone plus powered speakers for calls. Buyers whose headset already uses a single 4-pole TRRS plug will gain no benefit from this adapter.

Highlights

  • Splits one 3.5mm 4-position port into separate headphone and microphone connections
  • Connects headsets with dual 3-position plugs to a single combined audio jack
  • Enables external microphone and powered speakers through one laptop port
  • Nickel-plated straight connectors with 28 AWG wiring for clear signal transfer
  • Weighs .32 oz in a compact PVC-jacketed design

Specifications

BrandStarTech.com
ModelMUYHSMFF
TypeStereo Cables
ColorBlack
Length0 ft.
Connector Number3
Connector DetailConnector A: 1 - 3.5 mm Mini-Jack (4 Position) Male
Connector B: 2 - 3.5 mm Mini-Jack (3 Position) Female
Terminal GenderMale to Female
SpecificationsCable Jacket Type: PVC - Polyvinyl Chloride
Connector Style Straight
Product Weight: 0.32 oz [9 g]
Wire Gauge: 28 AWG
Connector Plating: Nickel
Packaging Style: Bagged
Shipping weight0.01 kg
Package size89 × 88 × 11 mm

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Questions about this item

Will the 28 AWG cable or nickel-plated connectors need replacement after frequent plugging?

The 28 AWG conductors and nickel-plated contacts are rated for normal daily insertion cycles; no scheduled replacement is required.

What is the first limitation when using this adapter continuously for long calls?

The adapter is passive, so the limiting factor is the host device's combined 3.5 mm 4-position port and its available headphone drive current.

Does the adapter generate any heat or noise when powered speakers run all day?

It contains no active electronics, so it produces no heat and no audible noise regardless of how long the connected devices operate.

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