Patozon via Amazon offers the Mpow Streambot Slider Bluetooth USB Adapter for $9.99. Applying coupon code BCO5CZQ3 drops the final price to $7.99 Prime shipped. That’s a 20% savings off the sale price, $1 less than our previous mention and the best offering we can find.

Upgrade your old speaker system with this handy Bluetooth dongle from Mpow. Simply plug the USB power supply into an available port or outlet and connect your setup to the 3.5mm jack and you’re in business. The slider case hides the USB adapter, eliminating the need for a cap that can be easily lost. Rated 3.9/5 stars.