A network switch with 20 Gigabit PoE ports, four 2.5GbE PoE ports, four 1/10GbE SFP+ uplink ports, and a 370W PoE budget.
The HPE Networking Instant On Switch 1940 S4A32A has four autosensing 100M/1G/2.5GBASE-T ports with IEEE 802.3af/at/bt Class 6 PoE and 20 autosensing 10/100/1000BASE-T ports with IEEE 802.3af/at Class 4 PoE. It includes four 1/10GbE SFP+ ports and a USB-C console port. The switch has a 370W PoE power rating, 140 Gbps switching capacity, 1 GB SDRAM, 512 MB flash, support for jumbo frames up to 9216 bytes, and dimensions of 14.44 x 17.48 x 1.73 inches (36.70 x 44.40 x 4.40 cm). Its weight is 9.65 lb (4.38 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 | 2.5G | 10G | 10G |
| Rack Units Height | — | 1 U | 1 U |
| Product line | Instant On | — | — |
| Lifecycle status | Active | — | — |
| Operating temperature | 0 to 40 °C | -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 | 2.5 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 | 370 W | 400 W | 380 W |
| PoE Output Type | PoE 802.3af, PoE+ 802.3at, PoE++ 802.3bt | PoE+ 802.3at | PoE+ 802.3at |
| Input Type | AC mains | AC mains, DC | AC mains, DC |
| Network Ports | Copper and Ethernet · 1G · Ethernet · 20 ports, Copper and Ethernet · 2.5G · Ethernet · 4 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 | 367 mm | — | — |
| Weight | 4.38 kg | — | — |
| Switching capacity | 140 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 · 5.9 µs, 1G · 1.7 µs | — | — |
| Maximum frame size | 9216 bytes | — | — |
| Packet buffer | 2 MB | — | — |
| Memory type | SDRAM | — | — |
| Onboard storage type | Flash | — | — |
| PoE ports | 24 ports | — | — |
| Switching features | Link aggregation (LACP, 802.3ad), VLANs (802.1Q) | — | — |
| Link aggregation groups | 16 count | — | — |
| Ports per aggregation group | 4 ports | — | — |
| Switching layer | Layer 2+ (static routing) | — | — |
| Maximum VLANs | 256 count | — | — |
| Number of power inputs | 1 count | — | — |
| Maximum ARP entries | 509 count | — | — |
| Stacking bandwidth | 32 Gbps | — | — |
| IPv4 unicast routes | 32 count | — | — |
| Routing protocols | Static routing | — | — |
Everything about this product in one PDF, ready to print or share with your team.
A 24-port Gigabit PoE+ switch with two 2.5GE SFP ports, a 400 W PoE budget, and built-in AC power.
An 8-port Gigabit PoE+ network switch with two 2.5G SFP uplink ports and a 128 W PoE budget.
A multi-gigabit PoE Ethernet switch with 12 RJ45 ports and two 10G SFP+ ports.
A 24-port PoE+ Gigabit Ethernet switch with four 10G SFP+ uplink ports and 128 Gbit/s switching capacity.
A 48-port Gigabit PoE+ switch with four 10GE SFP+ uplink ports, 176 Gbit/s switching capacity, and a 380 W PoE budget.
A fanless industrial PoE+ switch with eight Gigabit RJ45 ports, two GE SFP ports, two 10GE SFP+ ports, and redundant DC power support.