Keystone Snap-in Modules from Kong Cables provide a full range of solutions for voice, home networking, home office, audio, video and more. With the wide selection of snap-in modules, keystone wallplates and patch panels can be custom configured giving you greater control and flexibility. Insert Type: RCA. Color-Code: Red. Designed For: Snaps into patch panels and compatible wallplates and surface boxes. Application: Coupler for RCA audio/video applications. Certifications: UL listed.