General
Power	920 Watt
PoE power (one PSU)	820 Watt
PoE power (two PSUs)	1640 Watt
Operation mode	hot-swappable
Compatibility	GS-3152XSP, GS-4554XP, GS-4530XP
Colour	Silver
Length/depth	220 mm
ear category	5
WEEE number	45401549
Scope of delivery	LANCOM SPSU-920, installation manual

The LANCOM SPSU-920 is a modular power supply unit specifically designed for expanding network switches of the GS-3152XSP, GS-4554XP, and GS-4530XP series. It serves as an additional power supply unit (PSU) and enables the creation of a redundant power supply to increase fault tolerance in business-critical network environments. The unit is designed for use in live operation and can be replaced without interrupting network functions – a feature referred to as hot-swappable. This is particularly important in environments where network service interruption is not acceptable.

Applications
This power supply is primarily intended for use in professional network infrastructures, especially in companies requiring high availability of their IT systems. It is used in combination with the mentioned switch models to secure power supply and simultaneously increase PoE capacity. Typical applications include data centers, administrative buildings, or critical monitoring systems, where continuous power supply is required for all connected devices, such as IP cameras or VoIP phones.

Functions and Equipment in Detail
The SPSU-920 delivers a total power output of 920 W. When installed in a switch that already has an internal power supply, the PoE capacity is increased to 820 W. When two SPSU-920 modules are operated in parallel, the PoE capacity can be increased up to 1640 W. This enables powering all 48 PoE ports of a compatible switch with 30 W per port, which corresponds to the maximum PoE load per port. The PoE technology (Power over Ethernet) allows power supply to network devices via the same cable that also carries data transmission, thereby simplifying installation and reducing the number of cables.

Technology Explained Simply
The power supply is designed as a modular single unit to be inserted into the corresponding slot of the switch. It features a hot-swappable function, meaning it can be replaced during operation without needing to power down the switch. This increases operational reliability, as in the event of a power supply failure, the switch operation is not interrupted. The physical design is compact: 220 mm in depth, 40 mm in height, and silver in color. The weight is 900 g.

Compatibility and Accessories
The SPSU-920 is specifically designed for the switch models GS-3152XSP, GS-4554XP, and GS-4530XP. It can be used as a second power supply to create a redundant power supply. Combining it with a second SPSU-920 module enables doubling the PoE capacity, which is important for powering power-intensive PoE devices such as PTZ cameras or PoE+ end devices. No additional accessories are required to use the function.

Installation and Mounting
Installation is performed by inserting the module into the designated slot of the switch. The mounting instructions included in the delivery describe the installation process. The unit is designed to be inserted into the switch without tools or additional mounting components. Mounting typically involves simply sliding the module in and locking it in place within the slot.

Operational Advantages
Using the SPSU-920 significantly increases network reliability. The redundant power supply minimizes the risk of failure due to power supply issues. The increased PoE capacity enables full utilization of all PoE ports, increasing flexibility in device configuration. The hot-swappable function reduces downtime during maintenance or replacement of defective modules. The compact design and integrated mounting instructions simplify installation and maintenance.

The product is classified in ear-category 5 (small appliances shipping) according to ElektroG and is subject to the WEEE regulation with the marking 45401549. The delivery includes the power supply SPSU-920 and mounting instructions.