12x SFP+ front 10G module slots connected to VSC7558 through SFI
8x SFP28 front 25G module slots connected to VSC7558 through SFI high speed
Optional, one additional 10/100/1000BASE-T (RJ45) Ethernet port using an on-board VSC8211 PHY, which can be connected to VSC7558 NPI port through SGMII by adding a loopback add-on PCB
Four SMAs connectors and two ITU-T G.8275 compliant RS422 interfaces (1 PPS + ToD input and output) for Sync-E and PTP applications
Serial UART port (USB) for local management and software debugging by using a firmware driven Command Line Interface (CLI)
Reset button at rear, and user input button on front
System status LED (bi-color green/red) and port status LED (bi-color green/yellow) per network port for link and activity indication