Products / 800G 2×LR4 10 km
Overview
For campus and metro-edge links: two 400G LR4 ports in one OSFP module, each on a duplex LC pair, specified to 10 km of single-mode fiber.
10 km optics are low-volume parts, so few resellers stock them and prices spread widely: from about $1,100 at webstores to five figures at OEM list in our September 2026 survey. Ours are on this page at every tier.
Typical uses
- Data center to data center on one campus
- Runs between buildings beyond 2 km
- Two 400G LR4 ports from one 800G cage
Specifications
| Form factor | OSFP, twin-port (2 × 400G) |
|---|---|
| Electrical lanes | 8 × 100G PAM4 |
| Reach | 10 km |
| Fiber | Single-mode OS2, two duplex pairs |
| Wavelength | CWDM4: 1271 / 1291 / 1311 / 1331 nm |
| Connector | Dual duplex LC |
| Power (datasheet) | On request |
| Management | CMIS |
| Standards | 100G Lambda MSA 400G-LR4-10 on each port; OSFP MSA |
Power, DSP and temperature are the manufacturer's datasheet values. Reach, lanes, wavelengths and connectors follow the standards: OSFP MSA · 100G Lambda MSA. The full datasheet comes with each quote. Updated September 28, 2026.
What it costs elsewhere
Lowest public single-unit price in each channel, new modules, read from public web pages on September 25–28, 2026. US channel brands are TAA-compliant with lifetime warranties; ours are not TAA-compliant. Asia-shipped prices exclude US import duty and freight. Method and full ranges: price index.
800G OSFP 2×LR4, 10 km, dual duplex LC
OEM list prices for this type run $15,009–$37,793; almost nobody pays list.
Questions
Is 10 km a hard limit?
It is the rated reach on standard single-mode fiber. What decides a link is its loss budget, connectors and splices included; send us your loss measurements and we check them against the datasheet.
Does it link to 400G LR4-10 modules?
Each port follows the 100G Lambda MSA 400G-LR4-10 specification, so it is designed to link with 400G LR4-10 modules in other form factors. Confirm during evaluation.
Why publish a price for a 10 km module?
Long-reach prices are the least transparent in the market. Ours is the same table for every buyer; volume is the only discount.