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HP 1820-48G Managed Switch (J9981A)

48-port Gigabit switch + 4 fibre SFP, fanless for complete silence, 19-inch rackable. Simple configuration through a web browser: VLANs, link aggregation, quality of service.

  • 48 Gigabit RJ-45 ports + 4 SFP ports (fibre)
  • Fanless operation, complete silence
  • 19" rackable (mounting kit included)
  • Managed through a web browser: VLANs, link aggregation, rapid Spanning Tree
  • Quality of service with DSCP and IEEE 802.1p prioritisation
  • Switching capacity 104 Gbps, throughput up to 77.3 Mpps
  • 16,000-entry MAC address table
  • IGMP snooping to optimise video/multicast traffic
  • Jumbo frames up to 9,220 bytes
  • Weight 3.31 kg
Ref.: J9981A
HP 1820-48G Managed Switch (J9981A) — image 1

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  • Ports : the number and type of ports (RJ45, SFP, PoE) differ between models of a single series, which nevertheless shares one photo.
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6 799,00 DHincl. VAT

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Manufacturer's datasheetView the PDF · 1,2 Mo — downloadable

Product overview

Upgrade your network with the HP 1820-48G managed switch. With 104 Gbit/s of switching capacity and a 16,000-entry MAC table, this switch delivers outstanding performance. Enjoy minimal latency, throughput of up to 77.3 Mpps and versatile connectivity with its 48 RJ-45 Ethernet ports and 4 SFP ports. Boost your productivity today!

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Technical specifications

Technical specifications
MAC table size16,000 entries
Number of VLANs64 VLANs per port (IEEE 802.1Q tagging)
Internal memory128 MB SDRAM, 16 MB flash memory
Interfaces48 x RJ-45 Ethernet 10BASE-T, 100BASE-TX, 1000BASE-T + 4 x SFP 100/1000 Mbps
PoE portsNone
Total PoE budgetNone
Network standardsIEEE 802.3 (10BASE-T), 802.3u (100BASE-TX), 802.3ab (1000BASE-T), 802.3z (1000BASE-X), 802.1Q, 802.1p, 802.1D, 802.1W
Switching capacity104 Gbps
Forwarding rate77.3 Mpps
Packet buffer1.5 MB
Management modesSecure web interface (HTTPS), SNMP, 802.1AB LLDP, port mirroring
Cloud management platformNone
Layer 2 features802.1Q VLAN (64 VLANs per port), link aggregation, STP and RSTP, IGMP snooping, jumbo frames, DSCP prioritisation
IP routingNone
Quality of service (QoS)Yes
Power consumption39 W
Weight3.31 kg
Technical specifications (continued)
Dimensions (W x D x H)442.5 x 246.1 x 43.9 mm
Latency100 Mb latency below 7 µs (LIFO 64-byte packets), 1000 Mb latency below 2.4 µs (LIFO 64-byte packets), Throughput up to 77.3 Mpps (64-byte packets)
ProcessorARM Cortex-A9 at 400 MHz
Number of ports29 ports or more
ManagedYes
Security featuresHTTPS for the web interface, administrator password
Power supplyInternal 100-127 V AC / 200-240 V AC power supply
Cooling systemFanless
Operating temperature0 to 40 °C
Operating humidity15 to 95% at 40 °C, non-condensing
PoE powerNo
Port speed1 Gbps (Gigabit)
Management levelWeb interface (Smart)
Fibre slots (SFP)Yes
Mounting19-inch rack-mountable
Warranty1 year

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Under Law 09-08, you have the right to access, rectify and object to the processing of your personal data. This processing has been authorised by the CNDP under no. D-CE-389/2015. Learn more

Frequently asked questions about this product

Can a 48-port switch run without a fan?
Yes, this one can: the HP 1820-48G has a fanless design, so it is completely silent, and it draws only 39 W. That is what lets you install it in a cabinet close to the offices rather than in a wiring closet.
What features does this managed switch offer?
VLANs, link aggregation, rapid spanning tree and quality of service with DSCP and 802.1p prioritisation, all from a web browser. IGMP snooping also optimises the delivery of video and multicast streams.
What latency does this switch claim?
Under 2.4 µs at Gigabit and under 7 µs at 100 Mbps, on 64-byte packets, with 104 Gbps of switching capacity and up to 77.3 Mpps. The MAC address table holds 16,000 entries.
Does this switch pass jumbo frames?
Yes, up to 9,220 bytes, which speeds up backups and large copies to a server — provided the network cards are set to the same frame size.
What uplinks does this model offer?
Four SFP slots at 100 or 1,000 Mbps, in addition to the 48 Gigabit copper ports. They take fibre modules to link another building or the core switch, beyond the 100-metre reach of copper.
How much rack space does this switch take up?
44.25 × 24.61 × 4.39 cm and 3.31 kg: 1U high and 25 cm deep, with the 19-inch mounting kit included. A shallow, silent 48-port chassis, which is rare.
Is the switch new, and where can I find its datasheet?
Yes, new equipment, with the invoice serving as the warranty document. The manufacturer's document details the HP 1820-48G, its web management features and its specifications: datasheet (PDF).

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