LOGICO HDMI 5 Pack Female to Female Adapter Coupler 180 Degree White Keystone Insert Jack COMMERCIAL GRADE HDMI 5 PACK Keystone Jack White. 180 Degree rear connector. Gold-Plated HDMI Female jack to HDMI Female jack. Quick Connect Design HDMI Keystone/Coupler. Support all High Definition Resolution 3D, 4K, 1080p, 1080i, 720p and 480p. Fits into any Keystone opening.