Ugreen UG-20390 RJ45 Network Keystone Jack Inline Coupler Female to Female 1pcs (Black)

The Ugreen UG-20390 provides a compact solution for extending Ethernet connections without requiring cable splicing or re-termination. This female-to-female RJ45 coupler enables direct connection between two network cables while maintaining signal integrity across the junction point.

Keystone Jack Form Factor

The UG-20390 features a standard keystone jack design that fits universal keystone wall plates and patch panels. This standardized form factor measures 14.5mm x 16mm, matching industry-standard keystone openings. Consequently, the coupler integrates seamlessly into existing structured cabling installations.

Furthermore, the keystone design allows tool-free installation in compatible mounting hardware. Network installers can snap the UG-20390 into keystone cutouts without requiring specialized mounting brackets or additional fasteners.

Inline Coupler Configuration

This device functions as a straight-through inline coupler with female RJ45 ports on both ends. The configuration accepts standard male RJ45 plugs from Ethernet patch cables or permanently installed cabling. Signal transmission follows a pin-to-pin mapping where each conductor connects directly to its corresponding position.

Additionally, the inline design maintains the original cable orientation throughout the connection. This straight-through wiring eliminates potential confusion from crossover configurations in standard network applications.

Category 6 Performance Support

The UG-20390 supports Category 6 performance specifications up to 250 MHz bandwidth. This capability ensures compatibility with Gigabit Ethernet networks operating at 1000BASE-T standards. The coupler maintains signal quality for data transmission rates up to 1 Gbps across the connection junction.

Moreover, the design preserves the electrical characteristics required for Cat 6 compliance. Impedance matching and crosstalk specifications remain within tolerance when connecting two properly terminated Cat 6 cables.

Gold-Plated Contact System

Ugreen equipped the UG-20390 with gold-plated contacts in both RJ45 receptacles. The gold plating provides superior corrosion resistance compared to standard nickel or tin finishes. This material choice maintains consistent conductivity in environments with temperature variations and moderate humidity exposure.

In addition, the gold-plated contacts reduce insertion force while maintaining secure mechanical connection. Lower contact resistance translates to minimal signal degradation across the coupler interface.

Durable Housing Construction

The coupler utilizes high-impact thermoplastic housing material in black finish. This construction provides mechanical protection for the internal contact assembly during installation and long-term operation. The housing withstands the insertion forces from repeated cable connections without structural deformation.

Furthermore, the black color coding allows visual identification in multi-component network installations. The finish matches standard black Ethernet cables and network equipment for cohesive appearance in visible installations.

Compact Single-Unit Packaging

Ugreen packages the UG-20390 as a single coupler unit for targeted network extension applications. This individual packaging suits scenarios requiring one or two connection points rather than bulk installation projects. The single-piece format reduces material costs for small-scale network modifications.

Additionally, the compact packaging simplifies storage and organization in residential or small office network toolkits. The form factor occupies minimal space in installation equipment bags or parts organizers.

Versatile Application Support

The UG-20390 functions across multiple network categories including Cat 5e, Cat 6, and Cat 6A cables when operating within the coupler’s specifications. This backward and forward compatibility provides flexibility in mixed-infrastructure environments. The device accommodates both solid and stranded conductor cables commonly used in structured cabling.

Moreover, the coupler supports Power over Ethernet (PoE) applications up to IEEE 802.3af standards. All eight conductors maintain continuous electrical connection for both data transmission and power delivery through the junction point.