Perle S-4GPT-DSFP  - Protocol Transparent Stand-Alone Media Converter with dual SFP slots (empty). Supports two SFPs with identical speeds up to 4.25 Gbps (AC adapter included)

Perle Media Converter S-4GPT-DSFP-XT - Protocol Transparent Stand-Alone Industrial Temperature Media Converter w/ dual SFP slots (empty). Supports two SFPs w/ identical speeds up to 4.25 Gbps. Ext Temp, terminal block connector for external DC power