Juniper ERX-GEFE256M-MOD

1-port GE or 8-port 10/100 FE Line Module: supports (1) Gigabit Ethernet interface or (8) 10/100 Fast Ethernet interfaces with 256MB of memory. Requires either the GE IOA (ERX-GIGESFP-IOA) with pluggable SFP adapters or the FE IOA (FE-8_I/O). Line module redundancy is not supported.