Marvell has launched the 88X9121P, a dual 400GbE (gigabit Ethernet) PHY transceiver with 100GbE serial electrical I/O capabilities, designed for secured high-density optical infrastructure. The device offers 256-bit MACsec encryption, class C compliant precision time protocol (PTP) timestamping and Marvell’s 112G pam4 serdes technology for high-density 400GbE and 100GbE deployments. 100G serial electrical signaling optical ...

This story continues at Marvell announces dual 400GbE PHY for high density implementations

Or just read more coverage at Electronics Weekly