Cisco Security Services Module - Expansion module - Gigabit Ethernet x 4 - refurbished - for ASA 5505, 5510, 5520, 5540,

Cisco Security Services Module - Expansion module - Gigabit Ethernet x 4 - refurbished - for ASA 5505, 5510, 5520, 5540, 5550, 5560, 5580-20, 5580-40, 5585-X

The Security Services Module (SSM) is an optional I/O card for the adaptive security appliance. The SSM expands the total number of ports available on the security appliance, providing additional ports with Ethernet (RJ-45) or SFP (fiber optic) connections.