Digitus Skype USB Telephone handset, DA-70772 Can be used as a microphone/speaker with all PC based softphones, such as Skype,Google Chat, Google+, MSN, ICQ, X-lite, Dialpad, MediaRing, Net2phone, etc. Power supply via USB, no external power supply required Separate sound card not needed to use this device USB interface, plug and play Easy to use Supports Windows, Android and Linux