How to get a HyperX Cloud Stinger Wireless USB Adapter replacement

I love the headset, but I lost the USB Adapter for my HyperX Cloud Stinger Wireless headset. It would be a shame to throw out the whole headset just because I lost the USB, but the HyperX website shows the part as out of stock (part# HXS-HSWA-CSW) and from older posts it seems like this has been out of stock for a very long time. Is there any hope for me?