UGREEN 40675 2m 3.5mm TRRS Headset Extension Cable
Overview
UGREEN 40675 adds 2m of reach to a compatible four-pole 3.5mm headset connection while retaining stereo audio, microphone and supported inline-control paths. Its signal path is 3.5mm four-pole TRRS male to 3.5mm four-pole TRRS female. The physical build is 2m black braided cable with pure-copper conductors, blue threaded-metal housings, strain relief and gold-plated four-pole contacts. This guide separates the product’s real function from similar-looking splitters, extensions and digital adapters.
- 2M • FOUR-POLE TRRS • HEADSET EXTENSION
- SKU 40675
- 2m
- Black / blue
What it does well.
Key features
connector role. 3.5mm four-pole TRRS male to 3.5mm four-pole TRRS female.
Use. Adds 2m of reach to a compatible four-pole 3.5mm headset connection while retaining stereo audio, microphone and supported inline-control paths.
Compatibility boundary. CTIA-style 3.5mm TRRS headsets and combined headset sockets on compatible computers, controllers, phones, tablets and adapters.
Build and handling. 2m black braided cable with pure-copper conductors, blue threaded-metal housings, strain relief and gold-plated four-pole contacts.
Connector and signal-path guide
A passive four-contact path carries left, right, ground and compatible microphone/control contact. CTIA versus OMTP wiring still matters, and manufacturers can map buttons differently.
Why this matters: 3.5mm plugs can look alike while carrying different numbers of contacts. TRS normally provides stereo left/right/ground; TRRS adds a microphone/control contact. Digital USB-C or Lightning audio needs conversion electronics rather than passive rewiring.
Direction check: 3.5mm four-pole TRRS male to 3.5mm four-pole TRRS female. Do not buy by connector diameter alone.
Use scenarios
Headphone and AUX routing. Create the documented 3.5mm four-pole TRRS male to 3.5mm four-pole TRRS female path without powered electronics.
Car or home audio. Connect only when the source is an output and the destination is a compatible analogue input.
Home and office. Use 3.5mm four-pole TRRS male to 3.5mm four-pole TRRS female where the connector direction matches the equipment.
Travel kit. The compact form is easy to keep with the device whose port standard it matches; label it SKU 40675 to avoid mixing similar adapters.
Setup and usability guidance
Comfort rule: start playback at a low volume. A new adapter can expose a different device volume setting than the one used previously.
- Step 1: Switch off or lower the volume on connected audio equipment before insertion.
- Step 2: Identify input and output direction from the connector types and labels; do not force a plug into a mismatched socket.
- Step 3: Insert every plug fully. A partially seated 3.5mm plug can lose one channel, swap contact behaviour or create noise.
- Step 4: Route the cable with gentle curves and keep strain away from device sockets.
- Step 5: Test audio at a low level, then test microphone and inline buttons only if this model supports them.
- Step 6: When disconnecting, grip the plug housing rather than pulling the cable.
Compatible devices and systems
Compatibility class: CTIA-style 3.5mm TRRS headsets and combined headset sockets on compatible computers, controllers, phones, tablets and adapters.
Connector first. Confirm the male/female connector, TRS/TRRS contact count and input/output direction. Brand name alone does not prove fit.
Host capability. For USB-C, Lightning or Bluetooth products, the host must support the relevant audio function. For passive cables, both endpoints must already provide analogue audio.
Headset standard. CTIA and OMTP four-pole wiring are not interchangeable in every product. Inline button behaviour can also differ by phone, headset and operating system.
Cases and recessed sockets. A protective case, recessed jack or closely spaced panel can prevent full seating even when the nominal connector matches.
What this product does
- Provides the 3.5mm four-pole TRRS male to 3.5mm four-pole TRRS female connection described for SKU 40675.
- Adds 2m of reach to a compatible four-pole 3.5mm headset connection while retaining stereo audio, microphone and supported inline-control paths.
- Uses the build: 2m black braided cable with pure-copper conductors, blue threaded-metal housings, strain relief and gold-plated four-pole contacts.
- Keeps buying guidance tied to this SKU rather than borrowing capabilities from a related cable family.
What this product does not do
- not for separate PC headphone and mic sockets without another breakout adapter; OMTP and proprietary button mappings are not guaranteed; not a USB-C or Lightning converter.
- It does not guarantee louder sound, remove source noise or repair worn sockets, damaged cables or incompatible wiring.
- It does not create independent audio channels, mixing, electrical isolation or professional balanced conversion unless explicitly stated—which this product is not.
- It is not a power cable, charger, video adapter or networking accessory.
- It does not prove compatibility merely because another device has a visually similar port.
What to do
Match this SKU. Use 40675 only when 3.5mm four-pole TRRS male to 3.5mm four-pole TRRS female matches the required direction.
Seat connectors fully. Push straight into clean sockets while equipment volume is low. A half-seated plug is a common cause of missing channels or microphone failure.
Test each function. Check stereo left/right, microphone, calls and controls separately; not every contact or button applies to every product.
Protect device ports. Leave slack, avoid side load and disconnect by the housing so the small audio socket is not used as a lever.
What not to do
Do not force a plug. Stop if the connector does not align or seat. Check case clearance, debris, plug diameter and male/female direction.
Do not assume TRS equals TRRS. Count the contacts and confirm stereo-only versus headset microphone/control requirements before connecting.
Do not pull the cable. Grip the connector housing. Pulling, twisting or sharply folding the cable can damage conductors and device sockets.
Do not connect live at high volume. Lower or mute amplification before changing analogue connections to avoid pops, feedback or unexpectedly loud sound.
Warnings and limitations
Hearing safety: begin at low volume and limit exposure. An adapter does not provide hearing protection.
Compatibility: not for separate PC headphone and mic sockets without another breakout adapter; OMTP and proprietary button mappings are not guaranteed; not a USB-C or Lightning converter.
Environment: keep connectors dry, clean and away from extreme heat. Do not use a damaged or corroded plug.
Vehicles: pair, route and adjust controls while parked. Hands-free hardware does not remove the need to follow local driving and phone-use laws.
Selection guidance
1. Identify the job. Adds 2m of reach to a compatible four-pole 3.5mm headset connection while retaining stereo audio, microphone and supported inline-control paths.
2. Check direction. 3.5mm four-pole TRRS male to 3.5mm four-pole TRRS female.
3. Check contact standard. Decide whether the requirement is stereo TRS, CTIA headset TRRS, Bluetooth reception, USB Audio or Lightning audio.
4. Check limitations. not for separate PC headphone and mic sockets without another breakout adapter; OMTP and proprietary button mappings are not guaranteed; not a USB-C or Lightning converter.
Troubleshooting
No audio. Confirm the source output, destination input and operating-system output selection. Reseat both ends with any obstructing case removed.
One channel only. Lower volume, cleanly reseat the plug and test with another known-good headphone/source. A partially inserted TRS/TRRS plug often drops a channel.
Microphone missing. Verify this SKU carries a microphone path, then check CTIA/OMTP wiring, input selection, app permissions and mute controls.
Buzz or crackle. Keep connections away from power noise, stop cable movement, clean dry plugs and test components one at a time to identify a worn socket or cable.
Controls behave oddly. Device and headset manufacturers can map inline buttons differently. Remove parallel splitters, confirm the standard and test basic audio before controls.
Level is too low. Check source and destination volume independently. Passive cables do not amplify; digital adapters still depend on host volume, DAC output and headphone load.
model check before ordering
Match SKU 40675, 3.5mm four-pole TRRS male to 3.5mm four-pole TRRS female, 2m and the stated compatibility boundary. Similar UGREEN audio cables can differ in TRS/TRRS contacts, direction, digital conversion, microphone support and colour.
At a glance.
- Brand / SKU
- UGREEN 40675
- Product role
- adds 2m of reach to a compatible four-pole 3.5mm headset connection while retaining stereo audio, microphone and supported inline-control paths
- Connector path
- 3.5mm four-pole TRRS male to 3.5mm four-pole TRRS female
- Build
- 2m black braided cable with pure-copper conductors, blue threaded-metal housings, strain relief and gold-plated four-pole contacts
- Connector A
- 3.5mm four-pole TRRS male
- Connector B
- 3.5mm four-pole TRRS female
- Length
- 2m
- Signal
- Analogue stereo plus compatible microphone/control contacts
- Conductors
- Pure copper
- Jacket
- Black braid
- Housings
- Blue threaded metal
- Contacts
- Gold-plated
- Power / driver
- None
- Colour
- Black / blue
1 × UGREEN 40675 2m 3.5mm TRRS headset extension cable
No phone, computer, headphones, car stereo, speaker, charger or additional adapter is included unless explicitly named above.
Questions buyers ask.
What is UGREEN 40675 designed to do?
Adds 2m of reach to a compatible four-pole 3.5mm headset connection while retaining stereo audio, microphone and supported inline-control paths.
Which connector direction does it use?
3.5mm four-pole TRRS male to 3.5mm four-pole TRRS female. Match both ends before purchase.
Does it need a driver or separate power?
No. It is a passive analogue cable or adapter.
Will microphone and inline controls work?
A compatible CTIA headset can provide microphone, calls and supported inline controls when the USB-C host supports USB Audio.
Can I use it with a phone case?
Only if the plug housing can seat fully. A deep or narrow case opening can block complete insertion; never force the connector.
Does it improve audio quality or volume?
It provides the documented connection. Real noise, level and fidelity depend on the source, destination, file, amplification, socket condition and environment; it is not a universal amplifier or sound enhancer.
Can it be used as a microphone adapter?
Only in the compatible headset arrangement described above. It is not a universal professional microphone interface.
What should I check if sound comes from one side?
Lower volume, push each plug fully into a clean socket, remove an obstructing case and test each source/headphone separately. A half-seated TRS/TRRS plug commonly loses a channel.
Is it suitable for studio, stage or balanced audio?
It is a consumer audio accessory, not presented as a balanced professional interface, isolated splitter or stage-rated installation cable.
Can I connect extra adapters or splitters?
Possibly, but each extra joint can add fit, wiring and signal-level uncertainty. Check TRS/TRRS standard and direction at every step, then test at low volume.
What is included in the package?
1 × UGREEN 40675 2m 3.5mm TRRS headset extension cable.