The term "D-Link RJ45 original" likely refers to an original D-Link RJ45 connector or cable. D-Link is a well-known networking equipment manufacturer, and RJ45 is the standard connector used for Ethernet cables, which are commonly used for networking. These connectors are often found on cables used to connect computers, routers, switches, and other networking devices.

If you are looking for a D-Link RJ45 cable or D-Link RJ45 connector, they are typically used to establish wired Ethernet connections in home or business networks. Here’s what you might be referring to:

1. D-Link RJ45 Ethernet Cables: These are cables that have RJ45 connectors at both ends and are used to connect devices in a local area network (LAN). D-Link produces Ethernet cables in various categories, such as Cat 5e, Cat 6, and Cat 6a, to support different speeds and bandwidths.

2. D-Link RJ45 Connectors (for cable assembly): If you're referring to a D-Link-branded RJ45 connector (which would be a small part used to attach the end to an Ethernet cable), these are used in custom cable assemblies. The connectors are typically used by professionals who create their own Ethernet cables.

3. D-Link Routers/Switches with RJ45 Ports: D-Link network devices, such as routers and switches, often come with multiple RJ45 ports to allow for wired Ethernet connections.