Ending today, Newegg offers the Asus Bluetooth 4.0 USB 2.0 Adapter, model no. USB-BT400, for $4.99 with free shipping via the directions below. That's the lowest total price we could find by $2, although we saw it for $2 less in December. It features transfer rates up to 3MB/s. Deal ends May 31. To get this price:

1. View the Asus Bluetooth 4.0 USB 2.0 Adapter for $13.99
2. coupon code "EMCEJGJ32" cuts the price to $9.99
3. redeem this $5 mail-in rebate for a final price of $4.99