All 4 Look and Work Well - I only had two plugs available to show two plugged in but all 4 work. The item "4 Phones Verizon Yealink SIP-T46G 6-Line Gigabit VoIP Office Phone EUC" is in sale since Thursday, September 27, 2018. This item is in the category "Computers/Tablets & Networking\Enterprise Networking, Servers\VoIP Business Phones/IP PBX". The seller is "bay9sales" and is located in Port Orange, Florida. This item can be shipped to United States.