
HP 5120-48G-PoE+ EI, a 48-port Layer 3 managed switch with PoE+ and expansion slots.
The HP JG237A is the 5120-48G-PoE+ EI Switch with 2 Interface Slots, a Layer 3 managed switch with 48 RJ-45 Gigabit PoE+ ports, 4 further dual-personality ports usable as copper or SFP, and 2 expansion slots for additional interface modules.
It has a switching capacity of 192 Gbps and supports IEEE 802.3at PoE+, delivering up to 25.5W per port for powered devices such as access points and cameras. Layer 3 static routing, VLANs, IGMP snooping, quality of service and access control lists are all supported, giving it the feature set needed for enterprise access-layer deployments.
The 5120 EI series was HP’s higher-end enterprise access switch range, built for sites with dense PoE+ device deployments needing Layer 3 features at the edge. Tech-Star (UK-based, shipped worldwide) checks every switch before it ships. Get in touch to confirm compatibility with your network.

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| Key Features | 48x Gigabit PoE+ ports; 4x dual-personality copper/SFP ports; 2 expansion module slots |
|---|---|
| Applications | Enterprise Layer 3 PoE+ access switching for APs and cameras |
| Compatibility | HP 5120-48G-PoE+ EI switch series |
| Specifications | 48x PoE+ ports (up to 25.5W each) + 4 dual-personality ports; 192 Gbps switching capacity; Layer 3 static routing, VLANs, ACLs |
| Platform | HP 5120 EI series |
| Manufacturer | HP |
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