Description
The HPE Networking Instant On Switch 1940 S4A31A is a 24-port Gigabit managed PoE switch designed for small and medium-sized businesses that need reliable wired connectivity, Power over Ethernet, and high-speed fiber uplinks. The model provides 24 Gigabit Ethernet ports with Class 4 PoE and a total 240W PoE power budget, along with 4 dedicated SFP+ ports for high-speed uplinks. The S4A31A is identified by HPE’s part number as the 24G 4-port 240W PoE version of the Instant On 1940 series.
Its Class 4 PoE capability allows the switch to deliver up to 30W per PoE port, making it suitable for powering devices such as wireless access points, IP phones, and IP surveillance cameras without requiring separate power cabling.
The 4 dedicated SFP+ uplink ports provide high-speed fiber connectivity and can be used for network aggregation, longer-distance connections, or connecting the switch to other high-performance networking equipment. The 1940 series is positioned as an SMB-focused managed switching platform.
Specifications
| Specification | Details |
|---|---|
| Brand | HPE Networking |
| Series | Instant On 1940 |
| Model | S4A31A |
| Product Type | Managed PoE Switch |
| Ethernet Ports | 24 × Gigabit Ethernet |
| PoE | Class 4 PoE / PoE+ |
| PoE Standard | IEEE 802.3af/at |
| Total PoE Budget | 240W |
| Maximum PoE per Port | Up to 30W |
| Uplink Ports | 4 × SFP+ |
| SFP+ Speed | Up to 10GbE |
| Switch Management | Managed |
| Target Market | Small & Medium Businesses |
| Use Cases | Access Points, IP Phones, IP Cameras, Network Devices |
| Fiber Connectivity | SFP+ |
| Rack Mounting | Yes |
| Switch Series | HPE Networking Instant On 1940 |
The S4A31A is specifically listed as “HPE Networking Instant On Switch 24p Gigabit CL4 PoE 4p SFP+ 240W 1940”, confirming the 24 Gigabit ports, Class 4 PoE, four SFP+ ports, and 240W power configuration.
