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Rack n Stack, IT Infrastructure Services

100G and higher optics

QSFP28 and Beyond

RnS Optics

100G is standard on spine links now, and the difference between SR4, LR4, and CWDM4 is the difference between a link that works and an expensive mistake.

We match the module to the distance and the fiber plant, then test it before it ships.

Hardware shipped worldwide and crews dispatched from our Las Vegas warehouse.

Models and variants

What we source in the QSFP28 and Beyond line

100G SR4

Multimode over MTP for short in-row links.

100G LR4

Single-mode long reach for building and campus links.

100G CWDM4

Cost-effective single-mode for two-kilometre class runs.

100G to 4x25G breakout

Breakout assemblies for leaf-to-server fan-out.

400G options

Higher-speed modules where the platform supports them.

Have the exact part number? Send it and we will price it →

Questions we get

QSFP28 and Beyond, answered straight

SR4, LR4, or CWDM4?

Distance and fiber type decide it. Tell us the run and what fiber is in the ground and we will tell you which module is correct rather than which costs the most.

Do you supply the MTP trunks too?

Yes, cut to length with the cassettes, so the optic and the plant arrive matched.

More from this brand

Other RnS Optics lines we supply

Comparable lines elsewhere

The same job, other brands

We are not tied to a manufacturer, so if another line fits the site better we will say so. These do a comparable job to the QSFP28 and Beyond.

Get started

Need QSFP28 and Beyond, or someone to install it?

Send the part numbers or the scope. You get real availability, firm pricing, and a crew that has racked this equipment before.

or call 702-362-7659 · Mon–Fri 8am–6pm PT

Rack n' Stack is an independent integrator and reseller. We are not certified by, authorized by, or affiliated with this manufacturer, and we say so plainly. Brand and product names identify the equipment we supply and work on; all trademarks belong to their respective owners.