Fortinet FMC-F20 Mezzanine Card Module - 20 x SFP (mini-GBIC) 20 x Expansion Slots
20-PORT 1GBE FIREWALL MODULE WITH SFP INTERFACE
Technical Specifications:
Application/Usage: Optical Network, Data NetworkingNumber of Total Expansion Slots: 20Expansion Slot Type: SFP (mini-GBIC)Compatibility: 
FortiGate Multi-Threat Security Appliances