DGS-3630-28SC/A2ASI D-Link DGS-3630-28SC/A2ASI, L3 Managed Switch with 20 1000Base-X SFP ports and 4 100/1000Base-T/SFP combo-ports and 4 10GBase-X SFP+ ports. 68K Mac address, Physical stacking (up to 9 devices), Switc