1-11 Product OverviewOverviewH3C S5120-EI Series Ethernet switches (hereinafter referred to as S5120-EI series) are GigabitEthernet switching products developed by H3C. The S5120-EI series are designed to operate at theconvergence or access layer of enterprise networks and metropolitan area networks (MANs).Supporting IPv4/IPv6 dual stack, the S5120-EI series provide abundant service features.The S5120-EI series support the H3C-specific cluster management function, which facilitates yournetwork management. The S5120-EI C series switches support the Intelligent Resilient Framework(IRF) technology. You can connect multiple S5120-EI C switches through 10 GE ports to form a logicalentity, thus to establish a new intelligent network with high reliability, expandability and manageability.The S5120-EI series include six models, and have the system specifications as shown in Table 1-1.Table 1-1 System specifications of the S5120-EI seriesItem S5120-28C-EIS5120-24P-EIS5120-52C-EIS5120-48P-EIS5120-28C-PWR-EI S5120-52C-PWR-EIPhysicaldimensions(H × W × D)43.6 × 440 × 300 mm(1.72 × 17.32 × 11.81 in.)43.6 × 440 × 420 mm(1.72 × 17.32 × 16.54 in.)Weight <4.4 kg (9.70 lb) <4.7 kg (10.36lb)<6.9 kg(15.21 lb) <7.4 kg (16.31 lb)Management port One console port, on the front panelAuto-sensing10/100/1000Base-T Ethernet ports(on the front panel)24 48 24Supports PoE48Supports PoE1000 Base-X SFPports(on the front panel)4Note: Each 1000 Base-X SFP port and the corresponding auto-sensing10/100/1000Base-T Ethernet port form a Combo port. For each Combo port,either the SFP port or the corresponding 10/100/1000Base-T Ethernet portcan be used at a time. For details about the combo port mapping relationship,please refer to Table 1-5.Interface modulessupported(optional, on therear panel)S5120-24P-EI and S5120-48P-EI do not support any interface modules;S5120-28C-EI, S5120-52C-EI, S5120-28C-PWR-EI, and S5120-52C-PWR-EIsupport two interface modules respectively, which can be:z Short-haul dual-port 10GE CX4 interface module (LSPM1CX2P)z Dual-port 10 GE SFP+ interface module (LSPM2SP2P)z Dual-port 10 GE XFP interface module (LSPM1XP2P)z One-port 10 GE XFP interface module (LSPM1XP1P)Power sockettypes and quantity 1 AC power socket and 1 RPS power socket*