Cisco IE 3000 Expansion Module. Data transfer rate: 1 Gbit/s, Data link protocols: Ethernet, Fast Ethernet, Gigabit Ethernet, Connectivity technology: Wired. Internal memory: 128 MB. Colour of product: Blue. Operating temperature range (T-T): -40 - 75 °C, Storage temperature range (T-T): -25 - 85 °C, Operating relative humidity range: 10 - 95 %. Certification: IEC 61850-3, IEEE1613, NEMA TS-2, EN50155, ODVA, IEEE 1588v2