HP J4899B ProCurve 2650 - 48x 10/100 + 2x Gigabit 2X Combo SFP Ports Switch

2 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 an open mini-GBIC slot (for use with mini-GBIC transceivers).

eBay