General
Number of ports 10/100/1000BASE-T	20 piece
Number of ports 1/2.5/5/10GBASE-T	4 piece
Module type	ZL2 v3
Manufacturer	HPE
PoE+ support
MACSec v3

The article is a network module from manufacturer HPE, type CPNT, with manufacturer number J9991A. It is a ZL2 module designed for use in compatible HPE switches to extend port capacity and functionality. The module features 20 ports with 10/100/1000BASE-T technology and PoE+ support, as well as 4 ports with 1/2.5/5/10GBASE-T technology, also with PoE+ capability. This configuration enables the power supply of network devices such as IP cameras, access points, or VoIP phones via the network cable, simplifying installation. The modules are designed for use in professional network infrastructures, particularly in environments requiring high port density and simultaneous power supply.

Applications

The module is suitable for use in medium to large networks, especially in enterprises requiring central management of network devices via a central switch. The PoE+ functions allow power supply to end devices without additional power sources, simplifying the installation of IP surveillance cameras, WLAN access points, or IP phones in areas without direct power supply. The combination of 20 standard PoE+ ports and 4 high-speed ports makes it particularly suitable for applications requiring both a high number of end devices and high bandwidth for specific devices, for example in schools, hospitals, or office buildings.

Functions and Equipment in Detail

The module offers 20 ports with 10/100/1000BASE-T technology, supporting PoE+ (Power over Ethernet Plus). PoE+ enables the transmission of power and data over a single Ethernet cable, with a maximum power output per port of up to 30 watts. This is sufficient to power high-performance devices such as high-resolution IP cameras or WLAN access points with multiple antennas. Additionally, the module features 4 ports with 1/2.5/5/10GBASE-T technology, also with PoE+ support. These ports enable higher bandwidth for devices requiring faster data transfer, such as network storage devices or high-performance access points. MACSec v3 support provides encrypted communication at Layer 2, enhancing network security.

Technology Explained Simply

The 10/100/1000BASE-T ports operate at Ethernet standard speeds of 10 Mbit/s, 100 Mbit/s, and 1 Gbit/s. The designation BASE-T refers to the twisted-pair cable connection, typically operated with Cat5e or higher cable types. The PoE+ function uses the same cables to transmit power, eliminating the need for separate power cables. The 1/2.5/5/10GBASE-T ports support speeds from 1 Gbit/s to 10 Gbit/s, with the actual speed depending on the connected device and the cable used. For 10-Gbit/s transmission, Cat6a or Cat8 cables are generally recommended. MACSec v3 technology encrypts data at Layer 2, enabling secure communication between devices without requiring additional software or network layers.

Compatibility and Accessories

The module is specifically designed for use in HPE ZL2 switches that feature module slots for ZL2 modules. It is not suitable for other switch models or other manufacturers. Exact compatibility depends on the switch model series, with the module designation v3 indicating the third generation of ZL2 modules. The modules are designed for use in rack systems and are inserted into the corresponding module slots of the switches.

Installation and Mounting

Installation is performed by inserting the module into the appropriate slot of a compatible HPE ZL2 switch. The modules are designed for easy handling and are installed without tools. Connections are made via integrated RJ45 connectors, with cabling possible using Cat5e, Cat6a, or higher cable types depending on requirements. PoE+ functions are activated as soon as the module is installed in the switch and the switch's power supply is active. Configuration is done via the switch's network management software, with ports activated by default.

Operational Advantages

Using this module enables flexible expansion of network port capacity while simultaneously providing power to end devices via the network cable. This reduces the number of required power cables and simplifies installation. The combination of standard and high-speed ports allows optimal bandwidth utilization, with high-performance devices connected via the 10-Gbit/s ports. MACSec v3 support enhances network security by encrypting communication at Layer 2. The modules are designed for professional network environments and provide reliable performance in 24/7 operation conditions.