Name: J9981AR HPE 1820-48G 48-Port + 4-Port SFP Layer 2 Switch
Brand: HPE
SKU: J9981AR
Price: 230.88 USD
Availability: InStock
Rating: 4.8 (130 reviews)

Product Overview
The HPE 1820-48G 48-Port + 4-Port SFP Layer 2 Switch offers 48 Gigabit Ethernet ports alongside 4 SFP ports for fiber connectivity. It provides Layer 2 switching features to manage local network traffic effectively in business network setups, facilitating VLANs and link aggregation.

General Information
Brand	HPE
Condition	Refurbished

Technical Information
Switch Type	Layer 2, Managed Switch, Smart Managed Switch, Gigabit Switch
Mount Type	1U Rack, Desktop
Switch Ports	48
Number of Ports	48-Ports
Port Type	10/100/1000Base-T, 1000Base-X, RJ-45, SFP
Port Speed	10/100/1000 Mbps
UpLink Ports	4
POE Support	No
Switching Capacity	104 Gbps
Switch Forwarding Rate	203.125 Mpps
DRAM	128 MB
Flash Memory	16 MB
VLAN Support	Yes
Max VLANs Supported	4094
Stackable	No
Layer Support	Layer 2
Connector Type	RJ-45,SFP

Performance
Latency	<10 µs
Jumbo Frame Support	Up To 9216 Bytes
MAC Address Table Size	8192

Management and Configuration
Routing Protocols	Static
Remote Protocols	Web-based GUI (HTTP/HTTPS), SNMP
Management Interfaces	Web GUI, SNMP (v1/v2c/v3), Console (local)
Security Features	802.1X,Access Control Lists (ACLs),RADIUS authentication,MAC-based port security,Port security
Management Type	Web-Based (Smart)
Remote Management Protocol	HTTP,HTTPS,SNMPv1/v2c/v3,Telnet

Power & Cooling
Fans	Internal (variable-speed)
Power	Maximum ~20 W
Power Supply	Internal AC 100-240V, 50/60 Hz

Physical Characteristics
Dimensions	1.73 x 17.32 x 9.65 in
Weight	3.00
Operating Temperature	0°C to 45°C

Miscellaneous
Eco Friendly	Yes
Assembly Required	No
Compliance Standards	WEEE, RoHS, CE, FCC
Compliant Standards	IEEE 802.3,IEEE 802.3u,IEEE 802.3ab,IEEE 802.1Q,IEEE 802.1p,IEEE 802.3x

Product Description
The HPE 1820-48G 48-Port + 4-Port SFP Layer 2 Switch (model J9981AR) is engineered to provide robust wired network connectivity with 48 Gigabit Ethernet ports complemented by 4 SFP ports. It enables efficient management of local network traffic through Layer 2 switching features. This switch is commonly deployed in small to medium-sized business networks to expand wired infrastructure and support fiber optic uplinks for increased flexibility and scalability. Key Features 48 Gigabit Ethernet ports offering ample connectivity for devices 4 SFP ports supporting fiber optic connections for uplinks Layer 2 switching supporting VLANs, link aggregation, and network segmentation Managed switch providing control over traffic and network performance Designed to operate in business network environments requiring reliable traffic handling This switch assists in organizing and directing network traffic efficiently while supporting a range of wired devices. Its combination of copper and fiber ports allows integration into diverse network topologies, making it a versatile component for network expansion.

Use Cases
This switch is typically used in office or campus network environments where multiple wired devices require connection and segmentation. It suits organizations needing to expand network capacity with both copper and fiber connections, supporting managed Layer 2 operations. How It's Used: Connecting desktop computers and network printers in small to medium-sized offices Providing uplink connections to core switches or routers via fiber optic SFP ports Segregating network traffic using VLANs in business networks Aggregating multiple links to increase bandwidth between switches Supporting IP phones and other VoIP devices on a managed network The HPE switch plays a role in organizing network endpoints while enabling controlled data flow. Its design supports integration of fiber backbones, helping maintain network performance and scalability in growing environments.

FAQ's
What types of ports does the HPE J9981AR switch have? The HPE J9981AR switch includes 48 Gigabit Ethernet ports and 4 SFP ports for fiber optic connectivity, offering versatile connection options. What does Layer 2 switching mean on this switch? Layer 2 switching refers to the switch's ability to manage data frames within the same network segment, handling MAC addresses, VLANs, and link aggregation for efficient local traffic management. Can the SFP ports support fiber uplinks? Yes, the 4 SFP ports on this switch are designed to accommodate fiber optic modules to connect to other switches or network segments over longer distances. Is this switch suitable for small to medium business networks? Yes, its port density and Layer 2 features make it appropriate for small to medium-sized business environments requiring managed network switching. Does the switch support VLAN configuration? Yes, the HPE 1820-48G supports VLANs, allowing network segmentation and better traffic management within the local network. What management features does this switch provide? This switch offers management capabilities common to Layer 2 switches such as VLAN setup, link aggregation, and port configuration to control traffic flow.