Check the listing for details. Vodavi SP7100-00 CKB Circuit Card. Condition: Seller refurbished. Listed at 55.00 USD. Vodavi Starplus DHS/DHS-E SP7100-00 CKB 3 CO Line by 8 Digital Station Circuit Card FeaturesAdds 3 Analog CO Line Prrts to Compatible SystemsAdds 8 Digital Telephone Ports to Compatible SystemsReverse Orientation RJ21 Connector Compatibility*******Compatible Systems*******Vodavi Starplus DHS (SP7000-00)Vodavi Starplus DHSe (SP7000-10)*******Compatible Components*******Vodavi Starplus DHS 3 CO Line by 8 Digital Station KSU (SP7000-00)Vodavi Starplus DHSe 3 CO Line by 8 Digital Station KSU (SP7000-10)Vodavi Starplus DHS 2 Port Analog Station Adapter (SP7420-00)Vodavi Starplus DHS 2 Port Analog Station Adapter Expander (SP7440-00)*******Compatible Digital Telephones*******Vodavi Starplus DHS Executive Telephone (SP7314-xx)Vodavi Starplus DHS Enhanced Telephone (SP7312-xx)Vodavi DHS STarplus Basic Telephone (SP7311-xx)