An 8-port Gigabit smart-managed network switch with four IEEE 802.3at Class 4 PoE ports and 65W of PoE power.
The HPE Networking Instant On Switch 1840 provides eight RJ-45 autosensing 10/100/1000BASE-T ports, including four Class 4 PoE ports. It offers 16 Gbps switching capacity, support for jumbo frames up to 9216 bytes, Instant On cloud and mobile app management, a fanless design, and mounting options for tabletop, wall, under-table, or 19-inch two-post rack installation.
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 | 8 ports | 24 ports | 8 ports |
| Downlink Speed | 1 Gbps | 1 Gbps | 1 Gbps |
| Uplink Media Type | — | Fiber | Fiber |
| Uplink Speed | — | 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 | 65 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 · 8 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 | 295 mm | — | — |
| Height | 44 mm | — | — |
| Depth | 296 mm | — | — |
| Weight | 2.09 kg | — | — |
| Switching capacity | 16 Gbps | — | — |
| Forwarding capacity | 11.9 Mpps | — | — |
| MAC address table size | 16000 count | — | — |
| Power draw | maximum · 85.9 W, idle · 8.1 W | — | — |
| Number of fans | 0 count | — | — |
| MTBF | 1752000 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 | 1.2 GHz | — | — |
| Memory capacity | 1 GB | — | — |
| Onboard storage capacity | 0.26 GB | — | — |
| Cooling method | Passive (fanless) | — | — |
| Switching latency | 100M · 10.3 µs, 1G · 6.2 µs | — | — |
| Maximum frame size | 9216 bytes | — | — |
| Input current, maximum | 1.5 A | — | — |
| Packet buffer | 0.51 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, VCCI 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 | 4 ports | — | — |
| Power supply type | Internal | — | — |
| Switching features | Spanning Tree (STP, 802.1D), 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, Access control lists (MAC/IP), Management VLAN | — | — |
| Management protocols | SNMPv1, SNMPv2c, HTTP, HTTPS, SSH, Telnet, SCP, TFTP, Syslog | — | — |
| Link aggregation groups | 8 count | — | — |
| Ports per aggregation group | 4 ports | — | — |
| QoS queues | 4 count | — | — |
| Switching layer | Layer 2 | — | — |
| Management level | Smart managed | — | — |
| Maximum heat dissipation | 293.2 BTU/h | — | — |
| Rated input current | 1.5 A | — | — |
| Maximum VLANs | 64 count | — | — |
| Maximum ARP entries | 50 count | — | — |
| Maximum ACLs | 50 count | — | — |
| Directives | RoHS | — | — |
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