Don't see which ThinkPad you have, I have a ThinkPad G510 802.11n and an IdeaPad 329 802.11ac, neither have 2 Wireless adapters, only one each. Both have Bluetooth.
For older machines that I can't find drivers for I use a Cisco Linksys WUSB100 in a USB 2 port, it's an 802.11n. Also have AirLink 101 Wireless N 150 Ultra Mini USB Adapters.