News — 800G
The Dirty Connector Problem: MPO Inspection and Cleaning
Contamination is the leading cause of fiber link failure, and one dirty position on an MPO ferrule presents as a failing module. The inspect-clean-inspect discipline, the right tools, what never to do, and the symptom patterns that should send you to the scope instead of the spares shelf.
My Optic Won't Link: Reading DOM and Working the Optical Loss Budget
Before replacing a transceiver, read its DOM. Transmit and receive power split a dead link into three buckets in under a minute. Per-lane readings, the loss budget arithmetic, and the failures DOM is blind to.
Why 800G and 400G NVIDIA Optics Have 40+ Week Lead Times in 2026 (And What to Do About It)
Genuine NVIDIA OEM 800G optics are running 40+ week lead times in 2026 due to a global EML laser bottleneck — the same bottleneck NVIDIA just spent $4B locking up priority access to. Here's the data, and why compatible MMA4Z00-NS/NS400 modules ship in 7-10 days instead.
MMA4Z00-NS US Pricing Guide: What This 800G OSFP Module Actually Costs (2026)
A straight comparison of US pricing for the NVIDIA MMA4Z00-NS finned-top 800G OSFP SR8 twin-port switch module across refurbished, new OEM, and compatible sellers, plus the module-ratio and cooling-type mistakes specific to this part.