44-Port Gigabit Layer 2 Managed PoE+ Switch | 4 Gigabit Combo Ports + 2 SFP | NebulaFlex Cloud Zyxel's new generation of Layer 2 Managed Switches, the GS2220, are fully featured Layer 2 Gigabit Access Switches specifically designed to meet the challenges of converged networks with data, video and voice. The L2 features with end-to-end management are complemented by Zyxel's latest NebulaFlex Pro technology for management via the cloud.