Zyxel ES-3024 Layer 2 Stackable Switch, Managed, L2 Zyxel ES-3024 Layer 2 Stackable Switch. Switch type: Managed, Switch layer: L2. Basic switching RJ-45 Ethernet ports quantity: 24. MAC address table: 16000 entries. Networking standards: IEEE 802.1d, IEEE 802.1p, IEEE 802.1Q, IEEE 802.3, IEEE 802.3u, IEEE 802.3x