ExtremeSwitching 5420M 48 10/100/1000BASET FDX/HDX 802.3bt 90W PoE 2 stacking/SFP-DD 4 10/25G unpopulated SFP28 MACsec capable includes fan module 2 unpopulated modular PSU slots. 48 x 10/100/1000BASE-T 802.3bt (90W) ports: Full Duplex at 1000M, Full / Half-Duplex (autosensing) at 10/100M, MACsec-capable. 4 x 1/10/25Gb SFP28 uplink ports (unpopulated): MACsec-capable. 2 x Stacking/SFP-DD ports* (unpopulated). 1 x Serial console port (RJ-45). 1 x 10/100/1000BASE-T out-of-band management port. 2 x USB A ports for management or external USB flash. 1 x USB Micro-B console port