Amazon.com: Koffmon A40 Inline Mute/Volume Control Audio Cable Cord Lead Compatible with Logitech G633 G933 and Astro A10 A40 A30 A50 Gaming Headsets (Black) : Video Games
Logitech Astro A40 Gen 2 -Dark Gray- Wired Gaming Headset for Xbox One PC | eBay
Promotion Logitech Astro A40 Wired Gaming Headset 7.1 Channel Gaming headphone With Microphone for PC MAC PS4 Xbox E-sports
Logitech - ASTRO Gaming - A40 TR - 939-001660 - Gaming Headset with MixAmp TR Pro (Playstation)
astro 620-008945.002 Logitech G A40 TR Gaming Headset User Guide