HPEJ9981A

Pro Curve J9981A 1820-48G 48-Port Managed Ethernet Switch

The HPEProCurve J9981A (OfficeConnect 1820-48G) is a renewed, managed Gigabit Ethernet switchdelivering 48 RJ-45 ports and 4 SFP expansion slots. With silent fan-free operation and Layer 2 management features, it's a cost-effective network switch for small businesses, labs, or office networks.

Features

This smart-managed switch includes comprehensive Layer 2 features like VLANs (802.1Q), Link Aggregation (LACP), Spanning Tree (STP/RSTP), QoS, IGMP Snooping, and Loop Protection×delivered through an intuitive web interface and SNMP v1/v2c . The four SFP ports support 100 Mbps or 1 Gbps fiber uplinks, offering flexibility in deployment .

Advanced Options

Despite being fan-less and acoustically silent, it delivers robust performance with a throughput of up to 77.3 Mpps and switching capacity of 104 Gbps . Memory specs include 128 MB SDRAM, 16 MB flash, and an ARM Cortex-A9 (400 MHz) CPU .

Product Key Features

• 48 × Gigabit RJ-45 + 4 × 100/1000 Mbps SFP ports for flexible connectivity

• Fan-less design for silent operation in office or rack environments

• Layer 2 management with VLAN, QoS, LACP, STP/RSTP support

• Energy-efficient with idle-port power down and low power consumption

• Web-based full management without need for CLI or serial console

• Ideal for SMBs, offices, and edge network deployments

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Reliability & Performance

Designed for 24×7 reliability, the J9981A has a high MTBF (~61.7 years) and supports enterprise-grade protocols such as LLDP and DoS protection . Silent operation makes it suitable for open-office environments. While lacking CLI or console port access, all configurations are managed via a web GUI or SNMP

Key Features :

• 48 × 10/100/1000 Mbps RJ-45 ports + 4 × 100/1000 Mbps SFP expansion

• Fanless silent operation

• Layer 2 managed switch: VLANs, QoS, LACP, STP/RSTP

• Web-based management, SNMP v1/v2c, HTTPS

• Energy Efficient Ethernet, idle-port power down

• Supports jumbo frames (~9 kB), IGMP Snooping, LLDP, port mirroring

• DoS prevention and security features

• Rack-mountable 1U silent form factor

Specification	Details
Model Number	J9981A
Product Series	HPEOfficeConnect 1820-48G Managed Ethernet Switch
Port Configuration	48 × RJ-45 autosensing Gigabit + 4 × SFP 100/1000 Mbps
Layer Support	Layer 2 (VLAN, STP/RSTP, LACP)
Switching Capacity	104 Gbps
Throughput	~77.3 Mpps (64-byte packets)
MAC Table	16,000 entries
Processor / Memory	ARM Cortex-A9 @ 400 MHz, 128 MB SDRAM, 16 MB flash, 1.5 MB buffer
Management	Web GUI, SNMP v1/v2c, HTTPS
Form Factor	Rack-mountable 1U, fanless
Power Consumption	Max ~39 W, Idle ~28.8 W
Operating Temp/Humidity	0 °C to 40 °C; 15%-95% RH
MTBF	~61.7 years
Weight / Dimensions	7.3 lb (3.31 kg); 44.25 × 24.61 × 4.39 cm