Indicators – Check that the green “OK” LED lights. If red, the internal thermal fuse has opened – replace the unit.
Coordination – Ensure upstream overcurrent protection (breaker/fuse) does not exceed the SPD’s SCCR (short‑circuit current rating). spd driver 200131 top
Industrial PCs, networking gear (Cisco, MikroTik), or automotive infotainment systems sometimes label their DRAM modules on the PCB silkscreen as: Indicators – Check that the green “OK” LED lights
SPD DRIVER 200131 TOP
DIMM0, 4GB, DDR3L
Here, 200131 is a lot code or assembly batch number, and "TOP" indicates the primary side of the board. networking gear (Cisco