0.5m USB 3.0 extension
UGREEN 0.5m USB 3.0 Extension Cable (30125)
A short passive USB-A male-to-female extension cable that moves a hard-to-reach computer, television or console port to a more convenient position.
Product introduction
Overview
A short passive USB-A male-to-female extension cable that moves a hard-to-reach computer, television or console port to a more convenient position.
Passive host-port extension; one male host end and one female downstream end. Matching the connector shape alone is not enough: the host port, peripheral role, data generation, power requirement and installed driver must also be compatible.
This guide separates the headline interface ceiling from practical results and states what the exact SKU should not be used for, helping customers choose correctly before opening or routing the cable.
Quick reference
Key features
Exact length
0.5 metre
Data capability
Up to 5Gbps USB 3.0; backward-compatible with USB 2.0/1.1/1.0 at lower speed
Host/source side
USB-A 3.0 male for the computer, console, television or compatible host
Device/downstream side
USB-A 3.0 female for one compatible peripheral or its existing cable
Connections and roles
How it fits into your setup
Host or source
USB-A 3.0 male for the computer, console, television or compatible host
Peripheral or downstream side
USB-A 3.0 female for one compatible peripheral or its existing cable
Connection role
Passive host-port extension; one male host end and one female downstream end
Power expectation
Carries ordinary USB bus power subject to the host and device; no PD or fast-charge rating is promised
Real-world performance
Short SuperSpeed extension without a hub or protocol conversion
The 0.5m lead extends one port only. It does not create extra USB ports or add host functionality.
5Gbps requires a USB 3.x host, peripheral and any attached device cable. USB 2.0 equipment negotiates its lower supported rate.
Tin-plated copper conductors, foil-and-braid shielding and gold-plated connector surfaces are stated to reduce interference and repeated-port wear.
Materials and handling
Construction and everyday durability
Construction detail 1
Tin-plated copper conductors
Construction detail 2
Foil-and-braid shielding
Construction detail 3
Gold-plated USB-A connector surfaces
Construction detail 4
Flexible reinforced cable with more than 10,000 stated insertion cycles
Durability claims describe controlled product testing, not immunity from crushing, repeated sharp bends, liquid, corrosion or worn sockets. Grip the connector housing rather than pulling the cable.
Where it is useful
Use scenarios
Desktop rear port
Bring a rear USB socket forward for a flash drive, card reader or security key.
Console controller
Add modest reach for a compatible wired controller or accessory.
Television service/media port
Move a supported TV USB port to an easier location without converting its function.
Port-wear reduction
Leave the extension connected and use its female socket for frequently swapped peripherals.
Compatibility planning
Compatible devices and systems
Compatibility examples are categories, not blanket certification for every model or revision. Confirm the exact port and required function in the device manual.
Compatibility check 1
USB-A computers, consoles, TVs and hubs that expose a standard host port
Compatibility check 2
Flash drives, card readers, keyboards, mice, printers, scanners and controllers
Compatibility check 3
External drives where the combined cable length and power budget remain suitable
Compatibility check 4
USB 2.0/1.1 peripherals at their supported speed
Pre-purchase checklist
Check before buying
Connector shape
USB-A 3.0 male for the computer, console, television or compatible host; USB-A 3.0 female for one compatible peripheral or its existing cable.
Port roles
Passive host-port extension; one male host end and one female downstream end
Required performance
Up to 5Gbps USB 3.0; backward-compatible with USB 2.0/1.1/1.0 at lower speed
Power and video
Carries ordinary USB bus power subject to the host and device; no PD or fast-charge rating is promised. No native USB-to-HDMI/DisplayPort conversion
What this product does
- Extends one USB-A port by 0.5m
- Provides USB-A male to USB-A female connection
- Supports up to 5Gbps with compatible USB 3.x equipment
- Helps move repeated plugging away from the host socket
What this product does not do
- Not a USB hub or splitter
- Not an active repeater for very long distances
- Not USB-C, Thunderbolt, HDMI or Ethernet
- Not a guaranteed fast-charging or USB Power Delivery cable
Installation workflow
Setup and usability guidance
- Connect the male end to a working USB-A host port
- Connect one compatible peripheral to the female end
- Keep the combined cable path as short and direct as practical
- For storage, confirm stable detection and transfer before moving files
- Eject removable storage safely before unplugging
Operating-system, driver and software guidance
The cable or hub normally has no standalone application. The connected device can still require its manufacturer driver, firmware, print queue, audio/MIDI setting, storage permission or USB mode. A physical connection cannot add a missing operating-system feature.
When troubleshooting, test one variable at a time: a direct host port, a known-good peripheral, the original device cable, an updated driver and a simple workload. This distinguishes cable, power, port and software faults.
Good practice
What to do
Verify first
Check SKU, connector, length, role, data generation and power expectation before ordering.
Use a direct path
Remove unnecessary adapters and hubs while installing or diagnosing the connection.
Support the plugs
Leave a gentle service loop and prevent cable weight from pulling on small sockets.
Test before routing
Complete repeated real tasks before hiding the cable behind furniture or inside management channels.
What not to do
Do not force a near-match
Stop when plug shape or insertion resistance is wrong. Similar USB connectors are not interchangeable.
Do not exceed the stated role
No native USB-to-HDMI/DisplayPort conversion. Carries ordinary USB bus power subject to the host and device; no PD or fast-charge rating is promised.
Do not stack unknown links
Unsupported extensions and adapters reduce signal and power margin.
Do not ignore heat or damage
Unplug equipment that is wet, frayed, loose, crushed or unusually hot.
Read before use
Warnings and limitations
- Do not daisy-chain multiple extensions without explicit device support
- High-power drives can be unstable when the host power budget is marginal
- A television USB socket may be service-only, media-only or low-power
- Do not bend sharply at the connector or place the female joint under hanging weight
- 5Gbps is not available when any link in the chain is USB 2.0
Performance reminder: advertised USB rates are theoretical ceilings. Real results depend on the slowest compatible component and on shared bandwidth, software, workload and power conditions.
Diagnose methodically
Troubleshooting by symptom
Not detected
Confirm the exact connector and port role; test direct without a hub and restart the peripheral.
Connects then drops
Inspect for loose ports or cable strain, simplify the link and reduce bus-power demand.
Transfer is slow
Verify every endpoint supports the advertised USB generation and test with one large file.
Printing or scanning fails
Install the manufacturer driver, select the correct device and clear stalled print/scan jobs.
Works on one computer only
Compare drivers, USB power settings, security permissions and port capability.
Charging is weak or absent
Review the stated power role; this product may be data-focused and cannot add a charging protocol.
Video is absent
Use a dedicated video-capable solution unless the exact product explicitly supports USB-C display mode.
Exact-model reference
Technical specifications
| Brand / SKU | UGREEN 30125 |
|---|---|
| Model | UGREEN 30125 |
| Product type | 0.5m USB 3.0 extension |
| Length | 0.5 metre |
| Host/source side | USB-A 3.0 male for the computer, console, television or compatible host |
| Device/downstream side | USB-A 3.0 female for one compatible peripheral or its existing cable |
| Connection role | Passive host-port extension; one male host end and one female downstream end |
| Data capability | Up to 5Gbps USB 3.0; backward-compatible with USB 2.0/1.1/1.0 at lower speed |
| Power/charging role | Carries ordinary USB bus power subject to the host and device; no PD or fast-charge rating is promised |
| Native video | No native USB-to-HDMI/DisplayPort conversion |
| Construction | Tin-plated copper conductors; Foil-and-braid shielding; Gold-plated USB-A connector surfaces; Flexible reinforced cable with more than 10,000 stated insertion cycles |
| Cable-specific driver | Not normally required |
| Recommended topology | One direct supported link; avoid unsupported chains |
| Live Shopify status | ACTIVE at research time |
Inside the box
Package contents
1 × UGREEN 30125 0.5m USB 3.0 Type-A male-to-female extension cable
Computers, chargers, peripherals, displays, drives and adapters shown for context are not included unless explicitly listed above.
Clear answers
Product-specific FAQ
Verified catalogue content
UGREEN India Assurance
This guide is written for exact SKU 30125 using the live UGREEN India product record, its exact Shopify-owned media and official UGREEN references listed in the research record. Regional or family claims were not blended when they conflicted.
All embedded visuals belong to this live Shopify product record. They are presented one at a time at readable width, with no thumbnail wall, no marketplace-hosted artwork and no cramped side-by-side image column.
