The UGREEN USB 3.0 Coupler (20119) joins two USB-A male cables end to end, so you can extend a USB cable to reach a TV, printer or desk. It supports up to 5Gbps in a USB 3.0 chain and has an aluminium shell with gold-coloured contacts.
5GbpsUSB 3.0
A to Afemale coupler
Aluminiumhousing
Passiveno driver
UGREEN USB 3.0 Coupler key features
Extend a USB cable Join two USB-A cables.
USB 3.0 speed Up to 5Gbps; works with USB 2.0.
Stable connection Metal shield and gold-coloured contacts.
Compact Small aluminium body.
UGREEN USB 3.0 Coupler highlights
5Gbps transmission
USB 3.0 speed through the join.
Stable connection
A snug fit and shielded contacts.
Extend an existing cable
Reach further without buying a longer cable.
Usage scenarios for the UGREEN USB 3.0 Coupler
TV and media
Reach a TV USB port from a device further away.
Feature
Detail
Speed
Up to 5Gbps
Driver
None
Use: One host to one device only.
UGREEN USB 3.0 Coupler compatibility
Device
Status
What to expect
Extending a USB device cable
Compatible
Host to one device
Connecting two computers together
Not supported
Host-to-host is not supported
Very long cable chains
Partly
Keep total length short for USB 3.0
Works with
Extending USB-A cables
Won't work with
Computer-to-computer links
USB-C
UGREEN 20119 USB 3.0 Type-A Female to Female Coupler specifications
Model
UGREEN 20119
Connectors
USB-A female to USB-A female
Speed
Up to 5Gbps
Backward compatible
USB 2.0, 1.1
Housing
Aluminium alloy
Electronics
Passive
What's in the box
UGREEN USB 3.0 Type-A Female to Female Coupler (20119)
Good to know
One host, one device. Do not use it to connect two computers or two chargers together.
UGREEN USB 3.0 Coupler FAQs
What does it do?
Joins two USB-A male cables to extend them.
Is it USB 3.0?
Yes, up to 5Gbps.
Can I connect two PCs?
No.
Does it need a driver?
No.
Genuine UGREEN, imported and sold by Sophus Technosol Pvt Ltd, the authorised national distributor. GST invoice with every order. 2-year India warranty.
The UGREEN USB 3.0 Coupler (20119) joins two USB-A male cables end to end, so you can extend a USB cable to reach a TV, printer or desk. It supports up to 5Gbps in a USB 3.0 chain and has an aluminium shell with gold-coloured contacts.
5GbpsUSB 3.0
A to Afemale coupler
Aluminiumhousing
Passiveno driver
UGREEN USB 3.0 Coupler key features
Extend a USB cable Join two USB-A cables.
USB 3.0 speed Up to 5Gbps; works with USB 2.0.
Stable connection Metal shield and gold-coloured contacts.
Compact Small aluminium body.
UGREEN USB 3.0 Coupler highlights
5Gbps transmission
USB 3.0 speed through the join.
Stable connection
A snug fit and shielded contacts.
Extend an existing cable
Reach further without buying a longer cable.
Usage scenarios for the UGREEN USB 3.0 Coupler
TV and media
Reach a TV USB port from a device further away.
Feature
Detail
Speed
Up to 5Gbps
Driver
None
Use: One host to one device only.
UGREEN USB 3.0 Coupler compatibility
Device
Status
What to expect
Extending a USB device cable
Compatible
Host to one device
Connecting two computers together
Not supported
Host-to-host is not supported
Very long cable chains
Partly
Keep total length short for USB 3.0
Works with
Extending USB-A cables
Won't work with
Computer-to-computer links
USB-C
UGREEN 20119 USB 3.0 Type-A Female to Female Coupler specifications
Model
UGREEN 20119
Connectors
USB-A female to USB-A female
Speed
Up to 5Gbps
Backward compatible
USB 2.0, 1.1
Housing
Aluminium alloy
Electronics
Passive
What's in the box
UGREEN USB 3.0 Type-A Female to Female Coupler (20119)
Good to know
One host, one device. Do not use it to connect two computers or two chargers together.
UGREEN USB 3.0 Coupler FAQs
What does it do?
Joins two USB-A male cables to extend them.
Is it USB 3.0?
Yes, up to 5Gbps.
Can I connect two PCs?
No.
Does it need a driver?
No.
Genuine UGREEN, imported and sold by Sophus Technosol Pvt Ltd, the authorised national distributor. GST invoice with every order. 2-year India warranty.
UGREEN USB 3.0 Type-A Female-to-Female Coupler (20119)
Sale priceRs. 649.00
Regular priceRs. 887.00
Unit price
USB Type-A coupler · SKU safety guide
Overview
This connector deserves more caution than a normal extension cable: ordinary USB Type-A host ports are power sources, and USB-A male-to-male cabling is not a general-purpose host-to-host standard. Use one host or charging source only, at one end of a known compatible peripheral chain.
USB 3.0 ceiling in a compatible chain
USB Type-A femaleConnector 1
USB Type-A femaleConnector 2
Host-to-hostProhibited topology
Features
What it does well.
Key features
These are the functions that define this SKU. They are intentionally separated from performance assumptions so the connector, protocol and operating role stay clear.
Two USB Type-A female sockets accept two USB-A male plugs in a compatible extension arrangement.
USB 3.0 construction supports signalling up to 5Gbps when every link component is SuperSpeed-capable.
Backward compatible with lower-speed USB data modes at the negotiated common rate.
Compact aluminium-alloy outer case and internal metal shield are presented in the gallery.
Gold-coloured contacts and plug-and-play passive path require no independent driver.
Small format is convenient for a planned adapter kit but should not be used as a general host-to-host joiner.
Performance and planning
This guide separates the physical connector, protocol, speed ceiling and host requirements so that a familiar-looking plug is not mistaken for guaranteed compatibility. Performance examples are planning references, not promises: the source device, destination device, controller, operating system, cable chain, file system and workload can all become the limiting factor.
The coupler adds another connector interface to the USB path. Contact quality, cable length, shielding, host controller, device and power draw all influence whether the link remains stable at SuperSpeed.
The up-to-5Gbps mark is a protocol ceiling. File-copy results are lower and a USB 2.0 cable or device makes the whole chain operate at the lower compatible mode.
Because the adapter is passive, it does not restore voltage or data-eye margin. Prefer the shortest simple chain, especially for bus-powered storage, webcams and other demanding peripherals.
Use scenarios
The following examples show realistic ways to use the product while retaining the compatibility and safety checks described elsewhere in this guide.
Peripheral extension. Join a known USB-A male extension lead to a compatible USB-A male peripheral lead where one computer remains the only host/source.
Temporary desk setup. Bridge a deliberate one-host cable path for a keyboard, mouse, card reader or flash drive while keeping the coupler supported.
Recessed TV port access. Extend a TV USB host port to a supported flash drive only when the cable arrangement is intended for one host and the TV supports the media/file system.
Service kit. Keep as a connector-gender accessory for a technician who can verify cable roles and power direction before connection.
Short test chain. Use temporarily to identify reach or connector-gender needs before choosing a purpose-built cable for a permanent installation.
Setup and usability guidance
Use this sequence as a practical installation checklist. If the connected equipment manual gives a stricter instruction, follow the equipment manufacturer’s procedure.
Draw the intended path first and identify exactly one USB host or charging source and one downstream peripheral.
Inspect both male plugs and confirm the cables are intended to participate in a one-host USB peripheral connection.
Never proceed if the other end of both cables reaches computers, chargers, power banks or powered host ports.
With storage safely ejected and equipment idle, insert both USB-A male plugs fully and straight into the coupler.
Support the coupler and connected cables so their combined weight does not lever against a computer, television or device port.
Test detection and ordinary data function with non-critical content; for USB 3.0, confirm the host reports a SuperSpeed link.
If there is heat, odour, instability or uncertainty about power direction, disconnect immediately and replace the chain with a purpose-built cable.
Compatible devices and systems
Compatibility is conditional on physical connector, electrical or storage protocol, host support, software and the complete system design. A matching plug alone is not enough.
Two USB-A male plugs that form one correctly designed host-to-peripheral path with a single power source.
USB 3.0, USB 2.0 and USB 1.1 data modes at the common capability of the full chain.
Compatible flash drives, card readers, keyboards, mice and selected peripherals within the host’s data and power limits.
Extension use only when the other cable and device roles are known; connector gender alone is insufficient.
Television USB media use only when the TV is the sole host and supports the connected drive, file system and media format.
Bus-powered storage only if the complete passive path provides stable voltage; direct or powered-hub connection may be required.
What this product does
Use this product for the narrow functions below. Keeping the role specific makes troubleshooting easier and avoids buying it for an unrelated conversion task.
Mechanically joins two USB Type-A male plugs.
Carries compatible USB data through a straight passive connection.
Passes whatever safe bus power is present from the single host/source, subject to cable loss and device requirements.
Supports up to USB 3.0 5Gbps signalling when the complete one-host chain is compatible.
Changes connector gender in a planned extension arrangement without adding software.
What this product does not do
These exclusions are as important as the feature list. They distinguish this model from converters, powered accessories and visually similar products.
Important: If your required function appears in this exclusion list, choose a purpose-built product for that function rather than adding unverified adapters.
It does not safely connect two computers, two chargers, two power banks or two powered USB hosts.
It does not identify which end is the source and provides no electrical isolation or backfeed protection.
It does not act as a USB hub, switch, active repeater, data blocker or charging controller.
It does not boost current, voltage, charging speed or data performance.
It does not convert USB to video, Ethernet, USB-C, Lightning or another protocol.
It does not make an arbitrary USB-A male-to-male cable compliant with a device that was never designed for it.
What to do
Good installation and handling habits protect data, equipment ports and connection reliability.
Use only one host or power source in the complete chain.
Verify the role of every cable end and the peripheral’s USB requirements before connection.
Keep the chain short and simple and support the coupler mechanically.
Safely eject storage and maintain backups of important data.
Test demanding devices directly at the host before adding this passive connection.
Replace a permanent improvised chain with a purpose-built single cable where practical.
What not to do
Avoid these common mistakes even when the connectors appear to fit.
Do not connect computer-to-computer, charger-to-charger or any two powered source ports.
Do not use the coupler to improvise a USB-A host-to-host networking or file-transfer cable.
Do not assume a gender match proves USB protocol, direction or safe power flow.
Do not daisy-chain couplers and passive extensions for a long high-speed path.
Do not use with damaged, loose, hot or contaminated connectors.
Do not disconnect storage during reads, writes, backup, formatting or firmware activity.
Warnings and limitations
Review every point before connecting valuable equipment or irreplaceable data. Stop use if the setup does not match the documented interface.
Stop and recheck: Disconnect if connectors are forced, hardware becomes abnormally hot, data becomes unstable or the electrical/protocol role is uncertain.
Connecting two powered USB hosts can create an unsafe backfeed path and may damage ports or equipment. This is the most important limitation.
A passive coupler does not negotiate or limit current. Any older claim suggesting it creates a specific amperage should not be treated as an output specification.
Added contacts and cable length reduce signal and voltage margin; 5Gbps operation is conditional, not guaranteed.
Heavy plugs or taut cables can apply leverage to the small adapter and the equipment port.
A television example is valid only as a one-host peripheral path; the TV still decides drive format and media compatibility.
When the required cable roles are unclear, do not connect. Choose a purpose-built cable or consult the equipment documentation.
Check before ordering
A minute spent checking the complete signal path is more useful than choosing by connector shape or headline speed alone.
There is exactly one USB host or power source in the entire chain.
Both plugs are USB Type-A male and belong to a deliberately compatible peripheral path.
You are not attempting computer-to-computer file transfer or charger/power-source coupling.
The complete length and connector count are suitable for the required USB speed and device power.
The peripheral is supported by the host and any required driver is available.
A purpose-built one-piece extension cable is not the safer or more reliable choice.
Care and troubleshooting
Start with the simplest known-good path, change one variable at a time and protect important data before testing storage or configuration workflows.
Store the coupler dry and capped or in a clean pouch. Inspect for bent contacts, loose shells and debris before each use.
For no detection, disconnect the chain and test the peripheral directly; then verify cable data capability and add only the coupler.
For USB 2.0 fallback, replace each cable with a known USB 3.x data cable and check that the host and peripheral support SuperSpeed.
For disconnects under load, shorten the chain, remove optional adapters and use direct or powered-hub connection for demanding storage.
For any warmth or suspected source-to-source connection, unplug immediately and have the port/equipment checked before reuse.
Specifications
At a glance.
Product
USB Type-A female-to-female passive coupler
SKU
20119
Connector 1
USB Type-A female
Connector 2
USB Type-A female
Electrical direction control
None
Active electronics
None
Maximum listed data rate
Up to 5Gbps in a compatible USB 3.0 chain
Backward compatibility
USB 2.0 and USB 1.1 at lower negotiated speed
Housing
Aluminium-alloy exterior shown in gallery
Internal construction cues
Metal shield and gold-coloured contacts shown in gallery
Driver
No driver for the coupler
Permitted topology
One USB host/source to one compatible downstream peripheral path
Prohibited topology
Host-to-host, charger-to-charger or any two powered sources
Power behaviour
Passes existing bus power; does not boost, regulate or isolate
In the box
1 × UGREEN USB 3.0 Type-A female-to-female passive coupler, SKU 20119. No USB extension cable, peripheral cable, powered hub, host-transfer electronics or charger is identified as included. Select the two participating cables separately and verify that together they create one safe host-to-peripheral path.
The table consolidates the model facts and deliberately states conditional performance where the result depends on the wider system.
Package contents below reflect the current product record and gallery presentation. Accessories shown only as connected examples are not automatically included.
FAQs
Questions buyers ask.
Can this coupler connect two computers?
No. Never join two powered USB hosts with ordinary USB-A cabling and this passive coupler; it can create an unsafe power path.
What is the safe use pattern?
Exactly one host or power source connected through a known compatible cable chain to one downstream peripheral or properly designed hub.
Does it support 5Gbps?
It can carry USB 3.0 signalling up to 5Gbps when every part of the one-host chain is compatible. Added cable length and contacts can reduce stability.
Will it boost USB power?
No. It is passive and provides no voltage regulation, current boost, charging negotiation or isolation.
Can I join two chargers?
No. Never connect two chargers, power banks or other powered sources through it.
Is it a USB hub?
No. It joins two male plugs in one path and does not add ports or share devices.
Can it extend a flash-drive connection?
Yes, with a compatible USB-A male extension lead and one USB host, subject to signal, power and device support.
Can I use it with a TV?
Only as a one-host peripheral path when the TV supports the flash drive, file system and media. It does not add TV playback capability.
Does it need a driver?
The coupler does not. The connected peripheral may require a driver or application on the host.
Why does a drive disconnect?
The passive chain may have too much voltage drop or signal loss. Test directly, shorten the chain or use a suitable powered hub.
Can it convert USB-A to USB-C?
No. Both sockets are USB Type-A female and no protocol or connector conversion is provided.
Can I use several couplers together?
Avoid daisy-chaining. Each additional contact and cable segment reduces signal and power margin; choose a purpose-built cable instead.
