VSC8504 is a quad port Gigabit Ethernet (GE) PHY with Microchip's next-generation EcoEthernet™ IEEE 802.3az Energy Efficient Ethernet (EEE) for optimizing power in Enterprise networks, data centers, and consumer electronics. VSC8504 supports four dual media copper/fiber ports with QSGMII MAC interfaces, delivering Carrier-quality Synchronous Ethernet (SyncE) for TDM backhaul links, cellular base stations, and other SyncE applications