Headset Buddy PC Headset to Universal RJ9/RJ10/RJ22 Phone Switch Adapter (PC35-RJ9x)<div style="text-align: left;"><strong>[Product Information]</strong><ul><li id="replacementPartsFitmentBullet" class="aok-hidden" data-doesntfitmessage="We're not sure this item fits your " data-fitsmessage="This fits your "><span class="a-list-item"><span id="replacementPartsFitmentBulletInner"><a href="#" class="a-link-normal hsx-rpp-fitment-focus">Enter your model number</a>to make sure this fits.</span></span></li><li><span class="a-list-item"> Works as a combination of our pc35-rj9cisco and pc35-rj9a adapters! </span></li><li><span class="a-list-item"> Use your headset with almost any office phone (Avaya， Cisco， Polycom and etc) - 8 settings cover most phone models </span></li><li><span class="a-list-item"> Works great with most VOIP phones with a RJ9/Rj10/Rj22 headset jack </span></li><li><span class="a-list-item"> Convert two 3.5mm plugs to single 4P4C RJ9/RJ10 headset plug </span></li><li><span class="a-list-item"> Does not work with RJ11 jack， which is wider than your headset jack (6 positions vs. 4). RJ11 jack is what is in the wall. RJ9， RJ10， RJ22 are what is on your phone handset or headset. </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/31onp5j-sLL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/31YQ5FvFEvL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/31%2Bmj24YKIL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/31abnpFU-kL.jpg" noproxy>