Cisco QSFP-40G-SR4 40GBASE QSFP module, 40GBASE-SR4, 4 lanes, 850 nm MMF
Features and Benefits of Cisco QSFP Modules
●Hot-swappable input/output device that plugs into a 40 Gigabit
Ethernet Cisco QSFP port
●Interoperable with other IEEE-compliant 40GBASE interfaces where
applicable
●Certified and tested on Cisco QSFP 40G ports for superior
performance, quality, and reliability
●High-speed electrical interface compliant to the IEEE 802.3ba
standard
●QSFP Form factor, 2-wire I2C communication interface and other
low-speed electrical interface compliant to SFF 8436 and QSFP
Multisource Agreement (MSA)
The Cisco 40GBASE-SR4 QSFP Modules support link lengths of 100
meters and 150 meters, respectively, on laser-optimized OM3 and OM4
multimode fibers. It primarily enables high-bandwidth 40G optical
links over 12-fiber parallel fiber terminated with MPO/MTP
multifiber female connectors. It can also be used in a 4x10G
breakout mode for interoperability with 10GBASE-SR interfaces up to
100 and 150 meters on OM3 and OM4 fibers, respectively. The
worry-free 4x10G mode operation is enabled by the optimization of
the transmit and receive optical characteristics of the Cisco
QSFP-40G-SR4 to prevent receiver overload or unnecessary triggering
of alarm thresholds on the 10GBASE-SR receiver, and at the same
time is completely interoperable with all standard 40GBASE-SR4
interfaces.
The 4x10G connectivity is achieved using an external 12-fiber
parallel to 2-fiber duplex breakout cable, which connects the
40GBASE-SR4 module to four 10GBASE-SR optical interfaces. Cisco
QSFP-40G-SR4 is optimized to guarantee interoperability with any
IEEE 40GBASE-SR4 and 10GBASE-SR (in 4x10G mode).
QSFP Port Cabling Specifications
| Cisco QSFP | Wavelength (nm) | Cable Type | Core Size (Microns) | Modal Bandwidth (MHz*km)*3 | Cable Distance*1 | Power Consumption (W) | Pull Tab Color |
| Cisco QSFP-40G-SR4-S | 850 | MMF | 50.0 50.0 | 2000 (OM3) 4700 (OM4) | 100m 150m*2 | 1.5 | Beige |
| Cisco QSFP-40G-LR4-S | 1310 | SMF | G.652 | - | 10km | 3.5 | Blue |
| Cisco QSFP-40G-SR-BD | 832 - 918 | MMF | 50.0 50.0 50.0 | 500 (OM2) 2000 (OM3) 4700 (OM4) | 30m 100m 150m*2 | 3.5 | Gray |
| Cisco QSFP-40G-BD-RX | 832 - 918 | MMF | 50.0 50.0 50.0 | 500 (OM2) 2000 (OM3) 4700 (OM4) | 30m 100m 150m*2 | 3.5 | Beige (or Gray with “Rx” mark) |
| QSFP-40G-SR4 | 850 | MMF | 50.0 50.0 50.0 | 500 (OM2) 2000 (OM3) 4700 (OM4) | 30m 100m 150m*2 | 1.5 | Beige |
| FET-40G | 850 | MMF | 50.0 50.0 50.0 | 500 (OM2) 2000 (OM3) 4700 (OM4) | 30m 100m 150m*2 | 1.5 | Brown |
| QSFP-40G-CSR4 | 850 | MMF | 50.0 50.0 50.0 | 500 (OM2) 2000 (OM3) 4700 (OM4) | 82m 300m 400m | 1.5 | Orange |
| QSFP-40G-LR4 | 1310 | SMF | G.652 | - | 10km | 3.5 | Blue |
| WSP-Q40GLR4L | 1310 | SMF | G.652 | - | 2km | 3.5 | Yellow |
| QSFP-40G-ER4 | 1310 | SMF | G.652 | - | 40km*4 | 3.5 | Red |
| QSFP-4X10G-LR-S | 1310 | SMF | G.652 | - | 10km | 3.5 | Blue |
| QSFP-4SFP10G-CU0-5 | - | Direct-attach copper cable assembly | - | - | 0.5m | 1.5 | Beige |
| QSFP-4SFP10G-CU1M | - | - | - | 1m | Beige |
| QSFP-4SFP10G-CU2M | - | - | - | 2m | Brown |
| QSFP-4SFP10G-CU3M | - | - | - | 3m | Orange |
| QSFP-4SFP10G-CU4M | - | - | - | 4m | Orange |
| QSFP-4SFP10G-CU5M | - | - | - | 5m | Gray |
| QSFP-4X10G-AC7M | - | - | - | 7m | Blue |
| QSFP-4X10G-AC10M | - | - | - | 10m | Red |
| QSFP-H40G-CU0-5M | | | | 0.5m | Beige |
| QSFP-H40G-CU1M | - | - | - | 1m | Beige |
| QSFP-H40G-CU2M | - | - | - | 2m | Brown |
| QSFP-H40G-CU3M | - | - | - | 3m | Orange |
| QSFP-H40G-CU4M | - | - | - | 4m | Orange |
| QSFP-H40G-CU5M | - | - | - | 5m | Gray |
| QSFP-H40G-ACU7M | - | - | - | 7m | Blue |
| QSFP-H40G-ACU10M | - | - | - | 10m | Red |
| QSFP-4X10G-AOC1M | - | Active optical cable assembly | - | - | 1m | 1.5 | Beige |
| QSFP-4X10G-AOC2M | - | - | - | 2m | Brown |
| QSFP-4X10G-AOC3M | - | - | - | 3m | Orange |
| QSFP-4X10G-AOC5M | - | - | - | 5m | Gray |
| QSFP-4X10G-AOC7M | - | - | - | 7m | Blue |
| QSFP-4X10G-AOC10M | - | - | - | 10m | Red |
| QSFP-H40G-AOC1M | - | - | - | 1m | Beige |
| QSFP-H40G-AOC2M | - | - | - | 2m | Brown |
| QSFP-H40G-AOC3M | - | - | - | 3m | Orange |
| QSFP-H40G-AOC5M | - | - | - | 5m | Gray |
| QSFP-H40G-AOC7M | - | - | - | 7m | Blue |
| QSFP-H40G-AOC10M | - | | - | - | 10m | | Red |
| QSFP-H40G-AOC15M | - | | - | - | 15m | | Black |
| QSFP-H40G-AOC20M | - | | - | - | 20m | | Green |
| QSFP-H40G-AOC25M | - | | - | - | 25m | | Green |
| QSFP-H40G-AOC30M | - | | - | - | 30m | | Green |
| CVR-QSFP-SFP10G | - | Adapter | - | - | - | - | - |
*1 Minimum cabling distance is 0.5 meters for -SR4 and -CSR4 modules,
and 2 meters for -LR4 and -ER4 according to the IEEE 802.3
standard.
*2 Considered an engineered link with maximum 1 decibel loss budget.
*3 Specified at transmission wavelength.
*4 Links longer than 30 km for the same link power budget are
considered engineered links as per IEEE 802.3 Table 87–6. Depending
upon link architecture, attenuation may be required to guarantee
operation.
a.No FCoE support.
Note:All Cisco QSFP modules and cables exceed IEEE specifications,
guaranteeing a link bit-error rate (BER) better than 1E-15 with
some exceptions:
●QSFP-40G-SR-BD guarantees a link BER of 1E-12 when supporting 150m
on OM4 fiber.
●QSFP-40G-CSR4 complies with IEEE specifications, guaranteeing a
link BER better than 1E-12.
●QSFP-40G-ER4 complies with IEEE/OTU3 specifications, is guaranteed
up to BER 1E-12.
