- HIC Adapter Cable with QD (Quick Disconnect) - For connecting corded headsets directly to specific Avaya IP phones, including models 2410, 2420, 4406, 4412, 4424, 4406D+, 4412D+, 4424D+, 4424LD+, 4610SW, 4620, 4620SW, 4621SW, 5410, 5420, 5610, 5620, 6416D+M, 6424D+M, 9404, and 9408 - Works with Plantronics headsets EncorePro 510/520/530/540 and SupraPlus Wideband

• Compatible with Avaya IP phone models including 2410, 2420, 4406, 4412, 4424, 4610SW, 4620, 5410, 5620, and more.
• Designed for use with Plantronics headsets such as EncorePro 510, 520, 530, 540, and SupraPlus Wideband.
• Features a Quick Disconnect (QD) for easy headset attachment and detachment.
• Durable construction for long-lasting performance.
• Easy installation with no software required.