HPE OfficeConnect 1820 48G Switch (J9981A)48 RJ-45 autosensing 10/100/1000 ports(IEEE 802.3 Type 10BASE-T, IEEE 802.3uType 100BASE-TX, IEEE 802.3abType 1000BASE-T);Duplex: 10BASE-T/100BASE-TX: half or full;1000BASE-T: full only4 SFP 100/1000 Mbps ports(IEEE 802.3z Type 1000BASE-X,IEEE 802.3u Type 100BASE-FX)Supports a maximumof 48 autosensing 10/100/1000 portsplus 4 SFP 100/1000 slotsARM Cortex-A9 @ 400 MHz,128 MB SDRAM, 16 MB flash;packet buffer size: 1.5 MB