Increasing growth in 5G RAN and edge deployments is driving demand for high-precision timing synchronization across the network. Meet these challenging requirements head-on with a standards-based PCIe adapter that provides greater flexibility at a lower price point than single-purpose timing appliances. Most 5G RAN deployments use 1588 PTP, SyncE, or both to ensure required timing synchronization. Both of these synchronization methods are supported by the E810-XXVDA4T, while additional hardware enhancements ensure reliability and accuracy, and provide greater flexibility and simplicity for timing synchronization deployments. Synchronous Ethernet (SyncE) delivers frequency synchronization over Ethernet between SyncE-enabled devices. Extends traditional telecom timing architecture to commercial-off-the-shelf (COTS) Ethernet solutions. IEEE 1588 PTP enables synchronization of systems on a network through the transfer of timing data (including frequency, phase, and time of day) with hardware timestamping in PTP packets. Onboard high-precision oscillator maintains high accuracy during holdover, providing up to four hours with less than +/- 1.5 microsecond of phase error. Hardware features for deployment flexibility. GNSS mezzanine enables integrated support for frequency, phase, and time-of-day synchronization with Global Navigation Satellite Systems, including GPS, Galileo, GLONASS, BeiDou, and QZSS. Subminiature version B (SMB) coaxial connector allows connection to an external active GNSS antenna. Dual external SubMiniature version A (SMA) coaxial connectors allow connection to external 1PPS timing sources, such as GNSS signaling, devices and to timing recipients, enabling the network adapter to act as a grandmaster and as a timing source for other equipment. The output capability provides a way to audit the phase accuracy of each node. U.FL connectors, embedded coaxial connectors, allow 1PPS signal connectivity between the adapter and motherboard or another adapter. Dedicated send-and-receive U.FL ports are embedded on the adapter.