HP J9147A ProCurve 2910al-48G S Gigabit 48-port Switch + 4x Dual SFP + RACK EARS
4 dual-personality ports: each port can be used as either an RJ-45 10/100/1000 port (IEEE 802.3 Type 10Base-T; IEEE 802.3u Type 100Base-TX; IEEE 802.3ab 1000Base-T Gigabit Ethernet) or as a mini-GBIC slot (for use with mini-GBIC transceivers).