A smart-managed Gigabit Ethernet switch with 48 RJ-45 ports, 24 Class 4 PoE ports, and four 1GbE SFP uplink ports.
The HPE Networking Instant On Switch 1840 provides 24 autosensing 10/100/1000BASE-T ports with IEEE 802.3at Class 4 PoE, 24 additional autosensing 10/100/1000BASE-T ports, and four 1GbE SFP uplink ports. It has a 370W Class 4 PoE budget, 104Gbps switching capacity, support for jumbo frames up to 9216 bytes, and management through the Instant On Cloud Portal, mobile app, web browser, SNMP Manager, Telnet, and SSH. The switch includes an internal power supply, three fixed non-field-replaceable fans, and mounting support for racks, tables, walls, and under-table installations.
How this product lines up against others in Home & Office.
| Installation method | Rack 19", Desktop, Wall, Under-table | — | — |
| Link technology | Ethernet | Ethernet | Ethernet |
| Port speed | 1G | 2.5G | 2.5G |
| Rack Units Height | 1 U | 1 U | — |
| Product line | Instant On | — | — |
| Lifecycle status | Active | — | — |
| Operating temperature | 0 to 40 °C | -5 to 45 °C | -5 to 45 °C |
| Specification group | active | — | active |
| Downlink Media Type | Ethernet | Ethernet | Ethernet |
| Downlink Ports | 48 ports | 24 ports | 8 ports |
| Downlink Speed | 1 Gbps | 1 Gbps | 1 Gbps |
| Uplink Media Type | Fiber | Fiber | Fiber |
| Uplink Speed | 1 Gbps | 2.5 Gbps | 2.5 Gbps |
| AC Input Voltage | 100 to 240 V | 90 to 290 V | 170 to 264 V |
| HVDC Input Voltage | — | 190 to 290 V | — |
| Input Frequency | 50 to 60 Hz | 45 to 65 Hz | 47 to 63 Hz |
| PoE | Yes | Yes | Yes |
| PoE Budget | 370 W | 400 W | 128 W |
| PoE Output Type | PoE+ 802.3at | PoE 802.3af, PoE+ 802.3at | PoE 802.3af, PoE+ 802.3at |
| Input Type | AC mains | — | AC mains |
| Network Ports | Copper and Ethernet · 1G · Ethernet · 48 ports, Fiber Optic Transceiver · 1G · Fiber · 4 ports | Copper and Ethernet · 1G · Ethernet · 24 ports, Fiber Optic Transceiver · 2.5G · Fiber · 2 ports | Copper and Ethernet · 1G · Ethernet · 8 ports, Fiber Optic Transceiver · 2.5G · Fiber · 2 ports |
| Device Role | Switch | Switch | Switch |
| Width | 444 mm | — | — |
| Height | 44 mm | — | — |
| Depth | 367 mm | — | — |
| Weight | 4.54 kg | — | — |
| Switching capacity | 104 Gbps | — | — |
| Forwarding capacity | 77.37 Mpps | — | — |
| MAC address table size | 16000 count | — | — |
| Power draw | maximum · 466.1 W, average · 55.6 W, idle · 24.4 W | — | — |
| Number of fans | 3 count | — | — |
| MTBF | 1068720 hours | — | — |
| Operating humidity | 15 to 95 % | — | — |
| Storage temperature | -40 to 70 °C | — | — |
| Storage humidity | 15 to 95 % | — | — |
| Maximum altitude | 3000 m | — | — |
| Processor model | ARM Cortex-A9 | — | — |
| CPU maximum clock | 1.25 GHz | — | — |
| Memory capacity | 1 GB | — | — |
| Onboard storage capacity | 0.51 GB | — | — |
| Cooling method | Active (fan) | — | — |
| Switching latency | 100M · 8 µs, 1G · 3.3 µs | — | — |
| Acoustic noise | 20 dB | — | — |
| Maximum frame size | 9216 bytes | — | — |
| Input current, maximum | 4.7 A | — | — |
| Packet buffer | 4 MB | — | — |
| Two-post mountable | Yes | — | — |
| Device management | Cloud portal, Mobile app, Web GUI, SNMP, CLI | — | — |
| Rail kit included | Yes | — | — |
| Lifetime warranty | Yes | — | — |
| Compliance standard | EN 62368-1, IEC 62368-1, UL 62368, CAN/CSA C22.2 No. 62368-1, EN 60825-1, IEC 60825-1, EN 55032, CISPR 32 Class A, FCC Part 15 Class A, ICES-003 Class A, CNS 13438 Class A, AS/NZS CISPR 32 Class A, EN 55035, CISPR 35, EN 61000-4-2, EN 61000-4-3, EN 61000-4-4, EN 61000-4-5, EN 61000-4-6, EN 61000-4-8, EN 61000-4-11, EN 61000-3-2, EN 61000-3-3 | — | — |
| Security features | Trusted Platform Module (TPM), DoS protection, Two-factor authentication (2FA) | — | — |
| IP protocols | DHCP, Static IP, IPv4, NTP | — | — |
| Memory type | DDR4 | — | — |
| Onboard storage type | NAND flash | — | — |
| PoE ports | 24 ports | — | — |
| Power supply type | Internal | — | — |
| Switching features | Rapid Spanning Tree (RSTP, 802.1w), Link aggregation (LACP, 802.3ad), VLANs (802.1Q), Traffic prioritisation (802.1p), DSCP QoS, Flow control (802.3x), IGMP snooping, LLDP (802.1AB), LLDP-MED, Port mirroring, Loop protection, BPDU filtering, BPDU guard, Storm control, Energy-Efficient Ethernet (802.3az), Auto MDI/MDI-X, Cable diagnostics, Port security, Management VLAN | — | — |
| Management protocols | SNMPv1, SNMPv2c, HTTP, HTTPS, SSH, Telnet, SCP, TFTP, Syslog | — | — |
| Link aggregation groups | 16 count | — | — |
| Ports per aggregation group | 8 ports | — | — |
| QoS queues | 4 count | — | — |
| Switching layer | Layer 2 | — | — |
| Management level | Smart managed | — | — |
| Airflow direction | Side-to-side | — | — |
| Maximum heat dissipation | 1590.3 BTU/h | — | — |
| Rated input current | 2.3 A | — | — |
| Maximum VLANs | 64 count | — | — |
| Hot-swappable | No | — | — |
| Directives | RoHS | — | — |
| Needs separately-sold parts | No | — | — |
| Routing protocols | Static routing | — | — |
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