HP - Expansion module - Flexible Interface Card (FIC) - 4 ports - fractional T-1 (JD592A) Expansion Module - Product Description: HP expansion module - 4 ports Device Type: Expansion module Form Factor: Plug-in module Interface (Bus) Flexible Interface Card (FIC) Number of ports: 4 port Line Rate: Fractional T-1 Manufacturer Warranty: 1 year warranty