UGREEN 10Gbps RJ45 Female-to-Female Coupler (15117)
Overview
UGREEN 15117 is a passive inline coupler for joining two compatible male-ended Ethernet patch cables. It provides two female RJ45 sockets, shielded internal construction and an aluminium-alloy exterior. The listed ceiling is up to 10Gbps, but the joined channel remains limited by its lowest-category cable, weakest termination, slowest port and total length.
What it does well.
Key features
Product highlights
Up to 10Gbps. Format and length for planning the physical connection.
RJ45 female ↔ female. Product capability, subject to the complete host or network path.
100m total channel. The defining connector, protocol or construction detail for this SKU.
One clear job. Joins two male-ended RJ45 Ethernet patch cables in one removable inline connection.
No hidden upgrade. It does not amplify, repeat, regenerate, route or switch an Ethernet signal.
Maximum versus actual: Listed ceiling: up to 10Gbps, backward compatible with 1000/100/10Mbps. The 100m/328ft figure is the maximum total channel formed by both cables and the coupler, not additional distance created by the coupler.
Choose the right connection
Port and direction check
2 × RJ45 female sockets for two male Ethernet patch-cable plugs
Ethernet data is bidirectional; either female socket may face either side of the link. The coupler has no source, destination, power or software side.
Inspect port labels and connector shapes under good light before routing. A physically similar socket may serve telephone, console, management, USB or power rather than the network job described here.
Connection rule: never force a plug and never assume an adapter preserves the same protocol, speed or driver support.
Network performance
Speed, bandwidth and negotiation
Listed ceiling: up to 10Gbps, backward compatible with 1000/100/10Mbps. The 100m/328ft figure is the maximum total channel formed by both cables and the coupler, not additional distance created by the coupler.
A maximum link rate is not the same as measured payload throughput. Protocol overhead, storage speed, CPU load, router processing, remote servers and internet service can all reduce the number shown by an application.
For a useful test, first confirm the negotiated link rate, then run a local transfer between capable devices before testing a public speed service.
Use scenarios
Where it fits
Join two patch cables. Combine two suitable male-ended Ethernet patch leads when one cable does not reach.
Temporary desk relocation. Move a computer, console or printer without replacing an existing installed lead immediately.
Equipment-rack service loop. Join two labelled patch leads where the inline connection remains supported and accessible.
Home media connection. Extend a wired route to a television, console or media box while keeping the complete channel within its limits.
Troubleshooting substitution. Use the coupler only after both individual cables have passed a direct test at the intended speed.
Scenario boundary: every example assumes the actual ports, protocol, operating system and network equipment support the requested use.
Setup and usability guidance
A reliable first connection
Follow a controlled sequence so connector, network and software faults remain easy to isolate.
After setup: record the working port, negotiated speed or address configuration before adding more adapters, joins or software.
- Confirm both existing cables use intact male RJ45 plugs and are suitable for the intended speed.
- Add the lengths of both cables and keep the full Ethernet channel within the applicable 100m/328ft limit.
- Insert one cable into each female socket until both retaining clips click.
- Support the coupler so cable weight does not pull on either socket.
- Check link lights and negotiated speed at both endpoints.
- Run a local throughput or packet-stability test before securing the route.
- If performance falls, test each cable directly and replace the lower-category or damaged component.
Compatible devices and systems
Compatibility explained
Cable categories listed.
Compatible network roles.
Speed behaviour.
- Cat8 and Cat7 patch cables
- Cat6A and Cat6 patch cables
- Cat5e and Cat5 patch cables
- Router or switch to computer
- Router or switch to smart TV, console or printer
- Patch lead to another patch lead within a valid channel
- Up to 10Gbps on a suitable complete channel
- Backward compatible with 1Gbps, 100Mbps and 10Mbps
- No operating-system or driver dependency
What this product does
Supported jobs
Use SKU 15117 for these roles.
Each role stays within the product category described above; it does not imply conversion, amplification, routing or software support that is not listed.
- Joins two male-ended RJ45 Ethernet patch cables in one removable inline connection.
- Supports up to 10Gbps on a compatible complete channel.
- Passes bidirectional Ethernet data without software or external power.
- Retains each RJ45 plug with a standard latch interface.
- Provides internal shielding and a metal outer shell for the junction.
- Works with the listed Cat8 through Cat5 cable categories while performance follows the weakest component.
What this product does not do
Important exclusions
These exclusions prevent the most common wrong-product purchases and unsafe installations.
Choose another product when needed: use the correct active adapter, router, switch, repeater, installation-rated cable or managed service for functions outside this model’s role.
- It does not amplify, repeat, regenerate, route or switch an Ethernet signal.
- It does not add 100m/328ft beyond the normal complete-channel limit.
- It does not improve a damaged cable, poor termination or slow network port.
- It does not create Wi-Fi, add an Ethernet port or convert fibre, USB or telephone wiring.
- It does not have a PoE class or wattage promise on this page.
- It does not have a published waterproof, outdoor, burial, in-wall or fire rating.
What to do
Best-practice checklist
Protect the connection and make later diagnosis straightforward.
A labelled, supported and tested connection is easier to maintain than one hidden immediately after purchase.
- Use the same or better cable category on both sides where practical.
- Keep the joined total length within the applicable Ethernet channel limit.
- Seat both latches fully and support the coupler on a stable surface or tray.
- Test each individual cable directly before blaming the coupler.
- Keep the contacts clean, dry and protected from debris.
- Use one correct-length cable instead when a permanent uninterrupted run is practical.
What not to do
Avoid these mistakes
Most failures come from wrong interfaces, unsupported claims, strain or uncontrolled channel changes.
Stop using the product if a connector, housing, jacket or lead is cracked, loose, contaminated, unusually hot or exposes conductive parts.
- Do not describe the coupler as an active extender or signal booster.
- Do not count 328ft as extra length added to two already long cables.
- Do not daisy-chain several couplers without testing the complete channel.
- Do not let the coupler hang by the cables or become a trip point.
- Do not expose it to rain, standing water, burial or unapproved wall spaces.
- Do not promise PoE pass-through without verifying the power class and full installation path.
Warnings and limitations
Read before installation
The following limits remain important even when the connector appears to fit.
Permanent routes: test the complete real setup first and follow local electrical, building and workplace requirements.
- Every inline connection consumes channel margin and adds contact points.
- The 10Gbps ceiling requires suitable cables, sound terminations and 10G-capable network ports.
- The total-channel maximum is 100m/328ft, not 100m per cable.
- No waterproof, outdoor, direct-burial, in-wall, plenum, LSZH or fire-resistance rating is stated.
- Replace the coupler if either socket becomes loose, contaminated, bent or unusually hot.
At a glance.
- External shell
- Space-grey aluminium alloy
- Internal structure
- Metal shield layer and PVC inner shell
- Contacts
- Gold-plated copper contact wording
- Retention
- Snap-in RJ45 retaining clips
- Ports
- 2 × RJ45 female
- Electronics / power
- Passive; none stated
Physical build
Aluminium-alloy outer shell, internal metal shielding, PVC inner shell, contact board with gold-plated copper pins and snap-in retaining clips.
What is in the pack
Included only as stated for this current product record.
Routers, computers, printers, network cables, USB adapters, installation hardware and power supplies are not included unless individually listed above. Inspect the retail package before installation.
Questions buyers ask.
What does UGREEN 15117 connect?
It joins two standard male-ended RJ45 Ethernet patch cables through two female RJ45 sockets.
Is the coupler directional?
No. Ethernet data is bidirectional and either socket can face either side of the link.
Does it boost or repeat the signal?
No. It is a passive joiner with no power or active electronics; it cannot regenerate a weak or damaged channel.
Can it add 328ft to my existing cables?
No. 328ft or 100m is the maximum total channel figure, including both cables, both endpoints and the inline coupler.
Can it support 10Gbps?
Up to 10Gbps is listed when both cables, their terminations, the network ports and total length provide adequate channel performance.
Which cable categories are listed?
Cat8, Cat7, Cat6A, Cat6, Cat5e and Cat5 are listed. The complete link performs at the level of its weakest component.
Will it increase a Cat5 cable to Cat7 or Cat8?
No. A coupler cannot change cable category, repair termination quality or upgrade network ports.
Does it need a driver or power supply?
No. It is passive and independent of the operating system.
Is PoE pass-through guaranteed?
Can it be used outdoors or inside a wall?
No waterproof, outdoor, burial, in-wall, plenum, LSZH or fire rating is stated. Use installation-rated components where regulations require them.
Why did the link speed fall after adding it?
Test both cables directly, check total length, connector seating and port capability, and replace the lowest-category or damaged component.
What is included?
The package is treated as one UGREEN 15117 RJ45 female-to-female coupler. Ethernet cables are not listed as included.