This Ethernet switch doesn't require a power pack. It can get it's power from a downstream PoE switch or mid-span

The LevelOne FSW-0812 is a compact 8-port Fast Ethernet Switch with a PD port that allows this switch to receive its power requirement from a PoE Switch or PoE Injector. It is a high-performance, cost-effective, easy to use network switch for expanding home and office networks.

• PD network switch for flexible and easy installation without the need for a power adapter
• Complies with Half and Full-Duplex standards
• Features 8 Auto-Negotiation RJ45 ports supporting Auto-MDI/MDIX
• Full LED display panel for error detection and network monitoring
• Compact design for desktop or wall-mounting
• Plug-and-Play enabled for easy setup and configuration