Products / 800G DR8+ / 2×DR4 2 km
Overview
The parallel-fiber design of the 500 m DR modules, with optics rated for 2 km. They carry 800G between halls or buildings on a campus without the wavelength multiplexing of FR4.
Choose DR8+ for a single MPO-16 trunk, or 2×DR4 for two MPO-12 connectors and a 2 × 400G breakout. In our September 2026 survey, both were among the scarcest 800G parts in US stock, so every quote states lead time.
Typical uses
- Hall-to-hall links up to 2 km where fiber is plentiful
- Campus links between buildings on MPO trunks
- 2 × 400G breakout over 2 km (2×DR4)
Specifications
| Form factor | OSFP; DR8+ single port, 2×DR4 twin-port |
|---|---|
| Electrical lanes | 8 × 100G PAM4 |
| Reach | 2 km |
| Fiber | Single-mode OS2 |
| Wavelength | 1310 nm |
| Connector | MPO-16/APC (DR8+) or dual MPO-12/APC (2×DR4) |
| Power (datasheet) | ≤ 16 W |
| DSP | Full DSP, 5 nm |
| Case temperature | 0–70 °C |
| Management | CMIS 5.0 |
| Standards | IEEE 802.3df 800GBASE-DR8-2 / 400GBASE-DR4-2; OSFP MSA |
Power, DSP and temperature are the manufacturer's datasheet values. Reach, lanes, wavelengths and connectors follow the standards: IEEE 802.3 · 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 DR8+, 2 km, MPO-16/APC
800G OSFP 2×DR4, 2 km, dual MPO-12/APC
OEM list prices for this type run $10,000–$24,185; almost nobody pays list.
Questions
Why parallel fiber instead of 2×FR4 at 2 km?
Parallel optics skip the mux and demux, which keeps module cost and power down, but they use 16 fibers per 800G link instead of 4. If fiber between buildings is scarce, 2×FR4 fits better.
Do I need APC connectors?
Yes. Single-mode MPO for these modules is angle-polished. Mating APC with UPC damages the end faces and adds loss.
How fast can you ship?
Lead time depends on factory allocation and is written on each quote. A large US-warehouse webstore showed 0–3 units of these parts in our September 26, 2026 check.