When installing a high-speed network system, many users choose Cat.6A (10 Gigabit) cables and connectors to ensure high-speed transmission and stable performance.
However, a common issue encountered during installation is:
“Why can’t the Cat.6A RJ45 connector be crimped onto the cable, even though both are labeled Cat.6A?”
In most cases, this is not caused by a defective product.
The real reason is usually a mismatch between the RJ45 connector and the cable diameter.

For example, with LINKOMM network cables:
• Cat.6A 23AWG S/FTP double-shielded network cable – Outer diameter approximately 7.5 mm, thicker conductors, suitable for long-distance transmission or industrial applications
• Cat.6A 26AWG S/FTP high-flexibility network cable – Outer diameter approximately 6.3 mm, slimmer structure with greater flexibility, suitable for general installations
Although both cables meet the Cat.6A standard, their outer diameter and conductor thickness differ.
Therefore, they must be paired with the correct RJ45 connector specification to ensure smooth crimping and reliable signal performance.

LINKOMM Cat.6A RJ45 Connector Comparison
| Model | Structure | Suitable Cable OD | Conductor Size | Compatible Cable | Features |
|---|---|---|---|---|---|
| MPS016A88MT | Closed-end type | 6.0–6.5 mm | 26AWG | Cat.6A 26AWG S/FTP | Suitable for standard Cat.6A cables with smaller diameter. Easy installation for general applications. |
| MPS026A88MT | Pass-through type | 6.0–6.5 mm | 26AWG | Cat.6A 26AWG S/FTP | Transparent pass-through design allows easier wire sequence verification during crimping. |
| MPS036A88MT | Pass-through type | 7.0–8.0 mm | 23AWG | Cat.6A 23AWG S/FTP | Larger internal diameter designed for thicker cables, providing stable cable fixation. |

Achieve the Best Performance with the Correct Cable Matching
• Cat.6A 26AWG S/FTP high-flexibility cable
Can be paired with MPS016A88MT or MPS026A88MT (pass-through type) for faster installation and stable crimping.
• Cat.6A 23AWG S/FTP larger-diameter cable
Must be paired with MPS036A88MT. The connector is designed to match the larger conductor and cable jacket size, ensuring proper contact and secure termination.
• Using an incompatible RJ45 connector may result in conductors not fully inserted, poor crimping quality, or insufficient cable jacket locking, which can negatively affect signal performance.


Professional Recommendation
When selecting Cat.6A RJ45 connectors, it is important not only to check the specification label (Cat.6A / 10G), but also to ensure that the cable outer diameter and conductor size are properly matched. This detail is often overlooked, yet it plays a critical role in the overall stability of the network system and installation efficiency.
LINKOMM offers a variety of connector structures and size options to meet different installation requirements. Whether for office networks, data centers, or industrial environments, users can easily find the right connector solution for their applications.