The CNK-IP-217 provides a high quality pass-through digital video connection and has four (4) blank snapin ports that can be populated using your own snapins, or you can select and purchase a variety of snapins from Altinex. The CNK-IP-217 is designed to be interfaced with the Altinex Cable Nook CNK-IP-210 Face Plate (sold separately) and can be combined with a variety of modules from the CNK-IP modules product line (please refer to Altinex website for more information). The CNK-IP product line modules can be installed into any opening in the CNK-IP-210 Face Plate, which is compatible with Altinex Cable Nook models CNK200 and CNK202.