A 24-port Gigabit Ethernet switch with Class 4 PoE and four 1/10GbE SFP+ uplink ports.
The HPE Networking Instant On Switch 24p Gigabit CL4 PoE 4p SFP+ 240W 1940 has 24 autosensing 10/100/1000BASE-T RJ-45 ports with IEEE 802.3af/at Class 4 PoE and four SFP+ 1/10GbE ports. It includes a USB-C console port, supports jumbo frames up to 9216 bytes, provides 128 Gbps switching capacity, and has a 16,000-entry MAC address table. Dimensions are 12.09 x 17.48 x 1.73 inches (30.70 x 44.40 x 4.40 cm), and weight is 8.02 lb (3.64 kg).
How this product lines up against others in Medium Business.
| Installation method | — | Rack 19", Desktop, Wall | Rack 19", Desktop, Wall |
| Link technology | Ethernet | Ethernet | Ethernet |
| Port speed | 10G | 10G | 10G |
| Rack Units Height | 1 U | 1 U | 1 U |
| Product line | Instant On | — | — |
| Lifecycle status | Active | — | — |
| Operating temperature | — | -5 to 50 °C | -5 to 50 °C |
| Specification group | active | active | — |
| Downlink Media Type | Ethernet | Ethernet | Ethernet |
| Downlink Ports | 24 ports | 24 ports | 48 ports |
| Downlink Speed | 1 Gbps | 1 Gbps | 1 Gbps |
| Uplink Media Type | Fiber | Fiber | Fiber |
| Uplink Speed | 10 Gbps | 10 Gbps | 10 Gbps |
| AC Input Voltage | — | 90 to 290 V | 90 to 290 V |
| HVDC Input Voltage | — | 190 to 290 V | 190 to 290 V |
| Input Frequency | — | 45 to 65 Hz | 45 to 65 Hz |
| PoE | Yes | Yes | Yes |
| PoE Budget | 240 W | 400 W | 380 W |
| PoE Output Type | PoE 802.3af, PoE+ 802.3at | PoE+ 802.3at | PoE+ 802.3at |
| Input Type | — | AC mains, DC | AC mains, DC |
| Network Ports | Copper and Ethernet · 1G · Ethernet · 24 ports, Fiber Optic Transceiver · 10G · Fiber · 4 ports | Copper and Ethernet · 1G · Ethernet · 24 ports, Fiber Optic Transceiver · 10G · Fiber · 4 ports | Copper and Ethernet · 1G · Ethernet · 48 ports, Fiber Optic Transceiver · 10G · Fiber · 4 ports |
| Device Role | Switch | Switch | Switch |
| Width | 444 mm | — | — |
| Height | 44 mm | — | — |
| Depth | 307 mm | — | — |
| Weight | 3.64 kg | — | — |
| Switching capacity | 128 Gbps | — | — |
| MAC address table size | 16000 count | — | — |
| Processor model | ARM Cortex-A9 | — | — |
| CPU maximum clock | 1.25 GHz | — | — |
| Memory capacity | 1 GB | — | — |
| Onboard storage capacity | 0.51 GB | — | — |
| Switching latency | 100M · 6.5 µs, 1G · 2.7 µs | — | — |
| Maximum frame size | 9216 bytes | — | — |
| Packet buffer | 2 MB | — | — |
| Memory type | SDRAM | — | — |
| Onboard storage type | Flash | — | — |
| PoE ports | 24 ports | — | — |
| Link aggregation groups | 16 count | — | — |
| Ports per aggregation group | 4 ports | — | — |
| Switching layer | Layer 2+ (static routing) | — | — |
| Maximum VLANs | 256 count | — | — |
| Maximum ARP entries | 509 count | — | — |
| Maximum ACLs | 2048 count | — | — |
| Mirroring sessions | 32 count | — | — |
| Routing protocols | Static routing | — | — |
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