Cisco Meraki - SFP (mini-GBIC) transceiver module - GigE - 1000Base-SX - up to 722 ft - 850 nm - for Cisco Meraki MX100, MX400, MX600, MX80; Cloud Managed Ethernet Aggregation Switch MS420
The Cisco Meraki MA-SFP-1GB-SX SFP is a 1000BASE-SX SFP designed to be compatible with the MS220, MS320, and MS420 families.