Black Box Unshielded CAT5e Keystone Coupler (White)

The Black Box FM590 is an unshielded CAT5e keystone coupler that lets you join two Ethernet cables with minimal effort and without the need for additional tools. It snaps into a standard wallplate or patch panel and creates an immediate pass-through point for network runs.

This coupler provides two RJ-45 female jacks in a straight-pinned configuration. Because it supports both T568A and T568B wiring standards, you can use it confidently in new installations or to extend existing cable drops. Compatibility with Black Box GigaStation2 wallplates ensures a clean, professional look in structured cabling systems.

Its design is compact and durable, making it practical for crowded wiring closets, office workstations, or home network panels. Technicians appreciate the quick install when a cable comes up short, while home users value the way it hides neatly inside a faceplate. The white finish blends well with most wallplates and trim, so the finished installation looks intentional rather than improvised.

Choose the Black Box FM590 when you need a hassle-free way to extend or repair a CAT5e link in a residence, small business, or data center.

Highlights:

• Unshielded CAT5e keystone coupler
• Two RJ-45 female jacks with straight-pinned connections
• Supports both T568A and T568B wiring standards
• Compatible with Black Box GigaStation2 wallplates
• Design that is compact and durable for tight spaces
• White finish blends into common wallplates and décor