24 auto-sensing 10/100 ports (IEEE 802.3 Type 10Base-T, IEEE 802.3u Type 100Base-TX),Media Type: Auto-MDIX,Duplex: half or full,1 RJ-45 serial console port,2 auto-sensing 10/100/1000 ports (IEEE 802.3 Type 10Base-T, IEEE 802.3u Type 100Base-TX, IEEE 802.3ab Type 1000Base-T),Duplex: 10Base-T/100Base-TX: half or full; 1000Base-T: full only,2 open mini-GBIC (SFP) slots