Single and dual radio USB interfaces comparison table

 Product MK2R+ u2R MK II DK II CK USB II USB III Two Radio Operation Yes Yes No No No No No i-LINK Support Yes No Yes No No No No Built-in USB Sound card Yes No Yes Yes No No Yes Integrated WinKey Yes Yes Yes Yes Yes No No CW Memories Yes Yes Yes Yes Yes No No FSK Memories Yes Yes Yes Yes No No No PS/2 Keypad Support Yes Yes Yes Yes Yes No No FSK Support Yes Yes Yes Yes No Yes* Yes* Dual Receive Support Yes Yes Yes Yes n/a No No Voice Keyer Support Yes Yes Yes No n/a No No Microphone Switching Yes Yes Yes No n/a No No PA/LNA Switching Yes No Yes Yes No No No