EPOS EXPAND SP 20 Portable Speakerphone, Black-Silver, USB or 3.5mm Jack ConnectionThe EXPAND 20 Series of portable wired speakerphones is designed for mobile business professionals who set up their office where it is most convenient. Simply plug n play your speakerphone in your huddle space or small meeting room. With EXPAND 20 both callers and listeners have a more natural interaction, ensuring the teamwork necessary to boost the success of your business. With reliable, wired connections to your laptop, mobile phone or tablet you