What ports does the HPE J9981A provide?

48 RJ-45 autosensing 10/100/1000 ports with full-duplex Gigabit support plus 4 dual-speed SFP slots for 100/1000 Mbps fiber connectivity. Total 52 ports enable dense workgroup switching with uplinks to aggregation layer.

What is the switching capacity and throughput?

104 Gbps switching capacity with 77.3 Mpps forwarding rate for 64-byte packets. Achieves non-blocking wire-speed across all ports with latency under 2 µs at Gigabit speeds, suitable for office traffic loads.

Is the switch fanless and silent?

Yes, completely fanless design produces 0 dB acoustic power. Ideal for office deployments where noise is a concern, with passive cooling supporting 0-40°C operation and 39W max power rating.

What management features are available?

Web-based GUI for VLAN (802.1Q), Link Aggregation (LACP), QoS (802.1p), and port mirroring configuration. SNMP support for monitoring with intuitive interface designed for non-expert SMB admins.

What is the power requirement?

Single AC power supply accepting 100-127/200-240V at 50/60 Hz with 0.8/0.5A draw and 39W maximum consumption. No PoE capability; external PSU for powered devices required.

Does it support VLANs and trunking?

Yes, IEEE 802.1Q VLAN tagging with port-based and tagged VLAN support plus dynamic Link Aggregation (LACP/IEEE 802.3ad) for increased bandwidth and redundancy to servers or uplinks.

J9981A#ABA - HPE J9981A#ABA 48G 4SFP Layer 2 Managed Switch

Name: HPE J9981A#ABA 48G 4SFP Layer 2 Managed Switch
Brand: HPE
SKU: J9981A#ABA
Price: 105 USD
Availability: InStock

J9981A#ABA - HPE J9981A#ABA 48G 4SFP Layer 2 Managed Switch | US IT Hardware

Product overview

The HPE OfficeConnect 1820 48G Switch (J9981A#ABA) is a Gigabit web-managed Layer 2 switch designed for small and medium businesses requiring straightforward network management. It features 48 RJ-45 autosensing 10/100/1000 ports supporting full-duplex Gigabit Ethernet and 4 independent dual-speed SFP slots (100/1000 Mbps) for fiber uplinks, enabling flexible connectivity to core networks or longer-distance links. With a switching capacity of 104 Gbps and throughput up to 77.3 Mpps (64-byte packets), it delivers non-blocking performance for typical SMB workloads including file sharing, VoIP, and IP surveillance. Latency is under 2 µs at 1000 Mbps and 7 µs at 100 Mbps. Powered by an ARM Cortex-A9 processor at 400 MHz with 128 MB SDRAM and 1.5 MB packet buffer, it supports essential features like VLANs (IEEE 802.1Q), Link Aggregation, QoS, and SNMP monitoring via intuitive web interface. The fanless 1U rack-mountable design (17.42 x 9.69 x 1.73 inches, 7.3 lbs) operates silently at 0 dB acoustic with 39W max power consumption, suitable for office environments. MTBF exceeds 61 years for reliable deployment. Ideal for branch offices, retail, and small campuses needing cost-effective Gigabit switching without complex configuration.

48x Gigabit + 4x SFP ports.
104Gbps switching, 77.3Mpps.
Fanless 1U rack-mount 39W.
<2µs latency at 1000Mbps.
Web-managed VLANs, LACP.
16000 MAC entries, 61yr MTBF.

Expedited and overnight shipping options are available at checkout, priced by destination and service.
Purchase orders accepted from qualified institutions.
Refunds within 14 days and replacements within 30 days of delivery with an RMA (25% restocking fee on customer-initiated returns), and every part carries our Standard 30-Day Warranty - see our return policy or contact US IT Hardware.

Featuring

Manufacturer part #	J9981A#ABA
Brand	HPE
Condition	Refurbished
Management	Web GUI ¦ SNMP
Device Type	Layer 2 Managed Gigabit Switch - 48 ports
MAC Address Table	16000 entries

Storage

Memory	128MB SDRAM ¦ Packet buffer: 1.5MB ¦ Flash: 16MB

Processor

Processor

Compatible systems

Standards-based Layer 2 switch compatible with any Ethernet network, HPE SMB infrastructure, standard racks, and web/SNMP management tools.

HPE OfficeConnect
Model: 1820 Series
Form factor: 1U Rack
Generation: Current
Native integration in SMB rack setups
HPE Aruba Instant On
Model: 1930 Series
Form factor: 1U Rack
Generation: Current
Stackable with compatible models
Generic 19in EIA Racks
Model: Standard
Form factor: Rackmount
Generation: All
Universal 1U mounting compatibility

Best for

Small Office Networks
Deploying Gigabit connectivity for workstations, printers, and NAS in small offices using VLAN segmentation for guest and employee networks with web-based management.
Retail Branch Connectivity
Connecting POS systems, IP cameras, and wireless APs in retail stores with SFP uplinks to central routers and QoS for transaction priority.
VoIP and Unified Communications

Details

Shipping, warranty & returns

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Weight	3.31 kg (7.3 lb)
Dimensions	44.25 x 24.61 x 4.39 cm (W x D x H)
Form Factor	1U rack-mountable (19-inch EIA)

Acoustic	0 dB (fanless)
Operating Temperature	0°C to 40°C (32°F to 104°F)

HPE J9981A#ABA 48G 4SFP Layer 2 Managed Switch

Product overview

Featuring

Storage

Processor

Compatible systems

Best for

Details

Shipping, warranty & returns

Customer reviews

Network & Communication

Power Consumption

Physical Characteristics

Environmental

Interface/Ports

Warranty & Support

Frequently asked questions