The Cisco QSFP‑40G‑SR‑BD is a duplex‑fiber MMF transceiver delivering 40 Gbps over existing multimode cabling — ideal for high‑speed datacenter links without needing parallel fibre.

Feature

Specification

Product Name

Cisco QSFP‑40G‑SR‑BD

Type

40 Gbps bi‑directional fiber transceiver (QSFP+)

Fiber Type

Multi‑mode fiber (MMF)

Connector

Duplex LC (2‑fiber)

Supported Standard

40GBASE‑SR BiDi (Bi‑Directional) / IEEE 802.3ba 40G Ethernet

Data Rate / Throughput

40 Gbps aggregate (≈ 4 × 10.3125 Gbps lanes)

Wavelength (TX/RX)

832–918 nm (BiDi: two wavelengths per fiber pair)

Max Transmission Distance

Up to 150 m on OM4 / OM5 MMF; ~100 m on OM3 MMF

Medium

Duplex multimode fiber (MMF) — no need for MPO/multi‑strand parallel fiber

Optical Power (per lane)

TX: –4 to +5 dBm; RX: –6 to +5 dBm

Power Consumption

~ 3.5 W

Operating Temperature

0 °C to 70 °C

Form Factor / Dimensions

QSFP+; ~ 13.5 × 18.4 × 72.4 mm

Special Feature

Hot‑swappable; Digital Diagnostic Monitoring (DDM) support