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 tied with our mention from four weeks ago and the lowest total price we could find by $11. It features transfer rates up to 3Mbps. Rebate expires May 31. To get this deal:

1. View the ASUS Bluetooth 4.0 USB 2.0 Adapter for $18.99
2. apply coupon code "EMCPEPW39" to drop it to $9.99
3. redeem this $5 mail-in rebate for the final price of $4.99