HPE JL684B Instant On 1930 24‑Port PoE+ Gigabit Switch with 4 SFP+ Uplinks – 370W

Technical Specifications

• Product Number (SKU): JL684B

• I/O Ports and Slots:

  • 24 RJ-45 autosensing 10/100/1000BASE-T ports (IEEE 802.3 Type 10BASE-T, IEEE 802.3u Type 100BASE-TX, IEEE 802.3ab Type 1000BASE-T), all supporting Class 4 PoE

    • Duplex: 10BASE-T/100BASE-TX: half or full; 1000BASE-T: full only

  • 4 SFP+ 1G/10G ports

• Memory and Processor:

  • CPU: ARM Cortex-A9 @ 800 MHz, single core

  • 512 MB SDRAM

  • 256 MB flash

  • Packet Buffer Size: 1.5 MB

• Physical Characteristics:

  • Dimensions: 44.25 x 26.47 x 4.39 cm (17.42 x 10.42 x 1.73 in)

  • Weight: 3.73 kg (8.23 lb)

• Performance:

  • 100 Mb Latency: < 4.7 µs (64-byte packets)

  • 1000 Mb Latency: < 2.4 µs (64-byte packets)

  • 10000 Mb Latency: < 1.3 µs (64-byte packets)

  • Throughput: Up to 95.23 Mpps (64-byte packets)

  • Switching Capacity: 128 Gbps

  • Routing Table Size: 32 static entries

  • MAC Address Table Size: 16,000 entries

  • Reliability MTBF: 71 years

• Electrical Characteristics:

  • Frequency: 50/60 Hz

  • AC Voltage: 100–127 / 200–240 VAC

  • Current: 4.9 A / 2.4 A

  • Maximum Power Rating: 440.4 W

  • Idle Power: 20.3 W

  • Power Supply: Internal power supply

  • PoE Power: 370 W Class 4 PoE (IEEE 802.3af/at, up to 30 W per port)

• Environmental:

  • Operating Temperature: 0°C to 40°C (32°F to 104°F)

  • Operating Relative Humidity: 15% to 95% @ 40°C (104°F), non-condensing

  • Non-operating/Storage Temperature: -40°C to 70°C (-40°F to 158°F)

  • Non-operating/Storage Relative Humidity: 15% to 95% @ 60°C (140°F), non-condensing

  • Altitude: Up to 3,000 m (10,000 ft)

  • Acoustic: LAAd = 3.7 Bel; LpAm (Bystander) = 23 dB

• Safety Certifications:

  • UL 60950-1; IEC 60950-1; EN 60950-1; CAN/CSA-C22.2 No. 60950-1

  • EN 60825-1

  • UL 62368-1 Ed. 2; IEC 62368-1 Ed. 2; EN 62368-1:2014

• Emissions:

  • VCCI-CISPR 32 Class A; CNS 31538 Class A; ICES-003 Issue 6 Class A; FCC CFR 47 Part 15 Class A

  • EN 55032:2015 +AC:2016/CISPR-32 Class A

• Immunity:

  • Generic: CISPR 24/CISPR 35

  • EN: EN 55024:2010/EN 55035:2017

  • ESD: IEC 61000-4-2

  • Radiated: IEC 61000-4-3

  • EFT/Burst: IEC 61000-4-4

  • Surge: IEC 61000-4-5

  • Conducted: IEC 61000-4-6

  • Power Frequency Magnetic Field: IEC 61000-4-8

  • Voltage Dips and Interruptions: IEC 61000-4-11

  • Harmonics: EN 61000-3-2; IEC 61000-3-2

  • Flicker: EN 61000-3-3; IEC 61000-3-3

• Device Management:

  • Instant On Cloud

  • Web browser

  • SNMP Manager (v1, v2c, v3)

• Mounting:

  • Mounts in an EIA-standard 19 in. telecommunications rack or equipment cabinet (2-post rack kit included)

  • Supports table-top mounting

  • Supports rack mounting

  • Supports wall mounting with ports facing up or down

  • Supports under-table mounting using provided brackets

• Transceivers:

  • HPE Networking Instant On 1G SFP LC SX 500m OM2 MMF Transceiver (R9D16A)

  • HPE Networking Instant On 1G SFP LC LX 10km SMF Transceiver (S0G20A)

  • HPE Networking Instant On 10G SFP+ LC SR 300m MMF Transceiver (S0G21A)

  • HPE Networking Instant On 10G SFP+ LC LR 10km SMF Transceiver (S0G22A)

  • HPE Networking Instant On 1G SFP RJ45 100m Cat5e Transceiver (R9D17A/R9D17B)

Key Features

• Management:

  • Cloud-based management via Instant On mobile app or web portal for remote access.

  • Local web GUI for non-technical users, supporting up to 5 HTTP/HTTPS sessions.

  • Firmware update scheduling, default DHCP client mode (static fallback to 192.168.1.8), port mirroring, event logging, account management, locator LED, and schedule configuration for ACLs, port shutdown, or PoE power delivery.

• Quality of Service (QoS):

  • Traffic prioritization based on DSCP or IEEE 802.1p with four queues.

  • Auto-voice network for IP phone recognition and voice traffic prioritization.

  • IEEE 802.1p/Q VLAN tagging and Class of Service (CoS) with strict priority or weighted round-robin queuing.

  • Advanced classifier-based QoS using Layer 2, 3, and 4 criteria.

• Connectivity:

  • Auto MDI/MDI-X and auto-negotiation on all 10/100/1000 ports.

  • 4 SFP+ ports for 1G/10G fiber uplinks, increasing total port count.

• PoE Features:

  • Supports IEEE 802.3af (15.4 W) and 802.3at (30 W) PoE standards.

  • Auto-PoE power configuration via Link Layer Discovery Protocol (LLDP).

  • PoE power allocation based on LLDP-MED, class, or usage for efficient energy savings.

  • PoE scheduling to configure specific times for power delivery to connected devices like surveillance cameras or access points.

• Switching:

  • IEEE 802.1D STP, 802.1w RSTP, 802.1s MSTP, BPDU filtering, loop protection, IGMP v1/v2 snooping, link aggregation (up to 8 trunks, 8 ports per trunk), LLDP/LLDP-MED, and jumbo frame support (up to 9216 bytes).

  • Static IPv4 routing with up to 32 static entries.

• Network Security:

  • TPM-based security for cryptographic key storage.

  • IEEE 802.1X port access control, Network Access Control, port security allow list, automatic DoS protection, DHCP snooping, ARP attack prevention, packet storm protection, RADIUS authentication, and automatic VLAN assignment.

  • Management VLAN ID and link flap prevention.

• Performance and Efficiency:

  • IEEE 802.3az Energy Efficient Ethernet, auto-port shutdown, and energy savings status.

  • Energy-efficient cooling with variable-speed fans for minimal noise.

• Web Management Interface Features:

  • Top event dashboard, quick startup and VLAN wizard, Access Control Lists (ACLs) with up to 50 inbound IPv4 and MAC ACLs (480 ACEs), IPv6 host support, rate limiting, protected ports, SCP/TFTP file transfer, dual image support, user account management with authentication via RADIUS, SSL encryption, SNMP v1/v2c/v3, RMON, and cable diagnostics.