Ports Copper GE Ports (RJ45) : g01–g25, g26–g50   Combo Ports (RJ45 SFP) : 2 combo on ports g49, g50   Number of Ports with PoE Support : 48     Switching features Forwarding Rate : 104.16 Mpps   Switching Capacity : 140 Gbps   MAC Address : 16K   Jumbo Frame (FE, GE) : 9K     Others Standards : IEEE 802.3, IEEE 802.3u, IEEE 802.3ab, IEEE 802.3z, IEEE 802.3ae, IEEE 802.3x, IEEE 802.3ad, IEEE 802.3az, IEEE 802.1D, IEEE 802.1w, IEEE802.1Q/p, IEEE802.1X   Fans : Yes (two 8,200 rpm)