400G QSFP112 VR4 Optical Module
A photographed QIANWU-labeled 400G short-reach sample. Its visible label states 850 nm, 50 m, MMF. Exact original manufacturing PN, connector, CMIS, measured optical performance and host compatibility require independent verification before commercial supply.

Model-specific fact sheet
The QIANWU PN shown here is a proposed catalog identifier. Actual manufacturer, serial-linked CMIS readback, interfaces, quality results, regulatory applicability, stock, warranty, and compatibility must be established before public datasheet release or a binding quotation.
What we check before recommending this module
Exact switch, NIC or router, electrical port type, network OS and whether the supplier's module is supported in this system.
Actual optical reach, multi-mode fiber type, connector polarity, far-end module and FEC/breakout requirements.
Supplier original PN, EEPROM / CMIS vendor data, optical and temperature measurements, compatible firmware and test results.
Supplier-written price, warranty, current stock, shipping method and lead time before any firm customer quotation.
Tell us about both ends of your link
We do not infer compatibility from speed or form factor alone. Share your host model and port, far-end device, network OS release, reach, fiber/connector, quantity and required delivery city/date.