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A plug-in female connector used in data communication to connect various wall panels, surface mount boxes or distribution frames.
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What is a keystone jack?
A Keystone jack is a network jack used for telecommunications and data connections. It’s a standardized snap-in package for mounting a variety of low-voltage electrical jacks or optical connectors into a keystone plate, faceplate, surface-mount box, or patch panel.
Keystone jacks have a rectangular face of 14.5 mm wide by 16.0 mm high and are held in place by flexible tabs. This allows them to snap into a mounting plate with correspondingly sized rectangular slots called keystone cutouts. They are available for many connections, including RJ-11, RJ-45, HDMI, USB, and more.
What are the different types of keystone jack?
- Keystone jacks come in various types to accommodate different cables and connections. Here are some of the common types:
RJ45 Keystone Jacks:
- Used for Ethernet and network connections.
- Supports Cat5, Cat5e, Cat6, Cat6a, and Cat7 cables.
- Common in both commercial and residential network installations.
RJ11 Keystone Jacks:
- Used for telephone connections.
- They are smaller than RJ45 jacks and typically have four conductors.
Coaxial Keystone Jacks:
- Used for coaxial cable connections, such as cable television or internet.
- Compatible with RG6 and RG59 coaxial cables.
USB Keystone Jacks:
- Used for USB connections.
- Supports various USB standards like USB-A, USB-B, and USB-C.
Fiber Optic Keystone Jacks:
- Used for fiber optic cable connections.
- Supports single-mode and multi-mode fiber optic cables.
Audio/Video Keystone Jacks:
- Includes jacks for RCA, 3.5mm audio, and other A/V connectors.
- Used for various audio and video applications.
Blank Keystone Inserts:
- Used to fill empty keystone slots.
- Provides a neat and finished look on keystone plates.
- Each type of keystone jack is designed to accommodate a specific type of cable or connector, ensuring a reliable and efficient connection for various applications. The modular nature of keystone jacks allows them to be easily installed in wall plates, surface-mount boxes, or patch panels, making them a versatile choice for structured cabling systems.
What is RJ45 keystone jack?
An RJ45 Keystone Jack is a type of network connector used primarily for Ethernet networking. It’s designed to fit into a standard keystone cutout, which is a universal mount used in wall plates, patch panels, and surface mount boxes.
RJ45 Keystone Jacks are essential components in modern network installations, offering a reliable and standardized method for making Ethernet connections in a variety of settings.
Key features of an RJ45 Keystone Jack include:
- Compatibility with Ethernet Cables: It is typically used with Cat5, Cat5e, Cat6, Cat6a, and sometimes Cat7 Ethernet cables, which are standard in network cabling.
- Eight-Pin Connector: The RJ45 jack has eight pins for connecting eight wires of an Ethernet cable. This pin arrangement is crucial for maintaining the proper data transmission standards set by Ethernet protocols.
- Snap-In Design: The keystone design allows the RJ45 jack to be easily snapped into a keystone plate or panel. This feature provides versatility and ease of installation, allowing for quick changes and reconfigurations in network setups.
- Standardized Size and Shape: The dimensions of the RJ45 Keystone Jack are standardized, ensuring it can fit into any keystone slot regardless of the manufacturer.
- Use in Structured Cabling: It is commonly used in structured cabling for computer networks such as local area networks (LANs), and can also be used for other data transfer applications, including some telephone systems.
- Color-Coded Wiring Schemes: RJ45 Keystone Jacks often have color-coded wiring diagrams on the side to assist with the termination of Ethernet cables. The two most common wiring standards are T568A and T568B.
- Variants: They come in shielded and unshielded varieties to suit different environmental needs. Shielded jacks are used in areas with high electromagnetic interference (EMI).
How to chose a right keystone jack?
1 Determine the type of cable you will be using. Consider the category (e.g., Cat5e, Cat6, Cat6a, Cat7,Cat8)
- Cat5e: Suitable for networks up to 1 Gbps with a frequency of up to 100 MHz.
- Cat6: Suitable for networks up to 10 Gbps with a frequency of up to 250 MHz.
- Cat6a: Supports networks up to 10 Gbps with a frequency of up to 500 MHz and improved crosstalk performance.
- Cat7: Though less common in keystone format, Cat7 supports higher frequencies up to 600 MHz.
2 Consider whether the environment requires shielded or unshielded jacks
- Shielded (STP OR FTP): Has additional shielding to protect against electromagnetic interference (EMI), useful in industrial or high-interference environments.
- Unshielded (UTP): Lacks extra shielding, making it lighter and more flexible, commonly used in home and office environments.