1-YEAR WARRANTY & USB COMPATIBILITY: 30 days money back & 12 months worry-free guarantee. Works with Windows 2000/7/8/10/XP/Vista, Mac OS X, Skype, Softphone, Microsoft Lync, Cisco, and most leading UC platforms. EASY TO USE: Plug and Play, No drivers needed, this USB adapter cable connects directly from headset QD into the USB port on PC Computer, Laptop, Mac…USB compatible devices. DURABILITY & LENGTH: Straight Cable Length 5.6 feet (170cm). Professional design and quality materials make this USB QD adapter cable for QD headset more durable and stronger, hard to damage, perfect for Home, Office, Business, Call Center, Conference calls. SIMPLE AUDIO CONTROLS: This USB QD adapter built in-line professional IC Chip Volume Controls, easy to adjust the USB adapter cable volume up/down, mute/un-mute the microphone or speaker. COMPATIBLE QD TYPE: The USB adapter cable compatible with Plantronics quick disconnect headsets, such as H251, H251N, H261, H261N, HW291N, HW301N, HW710, HW720, and all H-series & all HW-series and same style QD like TruVoice/VoiceJoy/Wantek/Daily QD headset. NOT for Jabra GN, Yealink, MAIRDI, Sennheiser EPOS headsets.