Product comparison · 2 network transceiver modules

StarTech.com Cisco QSFP-100G-SR1.2 Compatible QSFP Module, 100Gbps Multi Mode Fiber (MMF), 100m [328ft], LC Transceiver, 850nm/900nm vs StarTech.com Cisco QDD-400G-DR4-S Compatible QSFP-DD Module, 400Gbps Single Mode Fiber (SMF), 500m [1640ft], MPO Transceiver, 1310nm

27specifications compared
11differ
16identical
5known for one product only

Key differences

The StarTech.com Cisco QDD-400G-DR4-S Compatible QSFP-DD Module, 400Gbps Single Mode Fiber (SMF), 500m [1640ft], MPO Transceiver, 1310nm has 300,000 Mbit/s more maximum data transfer rate than the StarTech.com Cisco QSFP-100G-SR1.2 Compatible QSFP Module, 100Gbps Multi Mode Fiber (MMF), 100m [328ft], LC Transceiver, 850nm/900nm (400000 Mbit/s vs 100000 Mbit/s). The StarTech.com Cisco QDD-400G-DR4-S Compatible QSFP-DD Module, 400Gbps Single Mode Fiber (SMF), 500m [1640ft], MPO Transceiver, 1310nm has 400 m more maximum transfer distance than the StarTech.com Cisco QSFP-100G-SR1.2 Compatible QSFP Module, 100Gbps Multi Mode Fiber (MMF), 100m [328ft], LC Transceiver, 850nm/900nm (500 m vs 100 m). The StarTech.com Cisco QDD-400G-DR4-S Compatible QSFP-DD Module, 400Gbps Single Mode Fiber (SMF), 500m [1640ft], MPO Transceiver, 1310nm has 300 GBASE more fiber ethernet cabling technology than the StarTech.com Cisco QSFP-100G-SR1.2 Compatible QSFP Module, 100Gbps Multi Mode Fiber (MMF), 100m [328ft], LC Transceiver, 850nm/900nm (400GBASE vs 100GBASE). Interface type: QSFP on the StarTech.com Cisco QSFP-100G-SR1.2 Compatible QSFP Module, 100Gbps Multi Mode Fiber (MMF), 100m [328ft], LC Transceiver, 850nm/900nm, QSFP-DD on the StarTech.com Cisco QDD-400G-DR4-S Compatible QSFP-DD Module, 400Gbps Single Mode Fiber (SMF), 500m [1640ft], MPO Transceiver, 1310nm. Fiber optic connector: LC on the StarTech.com Cisco QSFP-100G-SR1.2 Compatible QSFP Module, 100Gbps Multi Mode Fiber (MMF), 100m [328ft], LC Transceiver, 850nm/900nm, MPO on the StarTech.com Cisco QDD-400G-DR4-S Compatible QSFP-DD Module, 400Gbps Single Mode Fiber (SMF), 500m [1640ft], MPO Transceiver, 1310nm.

Maximum data transfer rate
- Cisco QSFP-100G-SR1.2 Compatible QSFP Module, 100Gbps Multi Mode Fiber (MMF), 100m [328ft], LC Transceiver, 850nm/900nm:100000 Mbit/s
- Cisco QDD-400G-DR4-S Compatible QSFP-DD Module, 400Gbps Single Mode Fiber (SMF), 500m [1640ft], MPO Transceiver, 1310nm:400000 Mbit/s
Interface type
- Cisco QSFP-100G-SR1.2 Compatible QSFP Module, 100Gbps Multi Mode Fiber (MMF), 100m [328ft], LC Transceiver, 850nm/900nm:QSFP
- Cisco QDD-400G-DR4-S Compatible QSFP-DD Module, 400Gbps Single Mode Fiber (SMF), 500m [1640ft], MPO Transceiver, 1310nm:QSFP-DD
Fiber optic connector
- Cisco QSFP-100G-SR1.2 Compatible QSFP Module, 100Gbps Multi Mode Fiber (MMF), 100m [328ft], LC Transceiver, 850nm/900nm:LC
- Cisco QDD-400G-DR4-S Compatible QSFP-DD Module, 400Gbps Single Mode Fiber (SMF), 500m [1640ft], MPO Transceiver, 1310nm:MPO
SFP transceiver standard
- Cisco QSFP-100G-SR1.2 Compatible QSFP Module, 100Gbps Multi Mode Fiber (MMF), 100m [328ft], LC Transceiver, 850nm/900nm:SR
- Cisco QDD-400G-DR4-S Compatible QSFP-DD Module, 400Gbps Single Mode Fiber (SMF), 500m [1640ft], MPO Transceiver, 1310nm:DR4
Maximum transfer distance
- Cisco QSFP-100G-SR1.2 Compatible QSFP Module, 100Gbps Multi Mode Fiber (MMF), 100m [328ft], LC Transceiver, 850nm/900nm:100 m
- Cisco QDD-400G-DR4-S Compatible QSFP-DD Module, 400Gbps Single Mode Fiber (SMF), 500m [1640ft], MPO Transceiver, 1310nm:500 m
Networking standards
- Cisco QSFP-100G-SR1.2 Compatible QSFP Module, 100Gbps Multi Mode Fiber (MMF), 100m [328ft], LC Transceiver, 850nm/900nm:IEEE 802.3ba
- Cisco QDD-400G-DR4-S Compatible QSFP-DD Module, 400Gbps Single Mode Fiber (SMF), 500m [1640ft], MPO Transceiver, 1310nm:IEEE 802.3bs
Fiber ethernet cabling technology
- Cisco QSFP-100G-SR1.2 Compatible QSFP Module, 100Gbps Multi Mode Fiber (MMF), 100m [328ft], LC Transceiver, 850nm/900nm:100GBASE
- Cisco QDD-400G-DR4-S Compatible QSFP-DD Module, 400Gbps Single Mode Fiber (SMF), 500m [1640ft], MPO Transceiver, 1310nm:400GBASE
Duplex system
- Cisco QSFP-100G-SR1.2 Compatible QSFP Module, 100Gbps Multi Mode Fiber (MMF), 100m [328ft], LC Transceiver, 850nm/900nm:Full, Half
- Cisco QDD-400G-DR4-S Compatible QSFP-DD Module, 400Gbps Single Mode Fiber (SMF), 500m [1640ft], MPO Transceiver, 1310nm:Full

Side by side

Differences highlightedShow differences only

Comparison of QSFP-100G-SR12-ST, QSFP-400G-DR4-ST
32 specifications	A StarTech.com Cisco QSFP-100G-SR1.2 Compatible QSFP Module, 100Gbps Multi Mode Fiber (MMF), 100m [328ft], LC Transceiver, 850nm/900nm Model QSFP-100G-SR12-ST View product	B StarTech.com Cisco QDD-400G-DR4-S Compatible QSFP-DD Module, 400Gbps Single Mode Fiber (SMF), 500m [1640ft], MPO Transceiver, 1310nm Model QSFP-400G-DR4-ST View product
Performance8 differ
Maximum data transfer rateDiffers	100000 Mbit/s	400000 Mbit/s
Interface typeDiffers	QSFP	QSFP-DD
Multi-mode fiber (MMF) supportedKnown for one	Yes	Unknown — not stated by the source
Fiber optic connectorDiffers	LC	MPO
SFP transceiver standardDiffers	SR	DR4
Maximum transfer distanceDiffers	100 m	500 m
Tx wavelength (max)Known for one	850 nm	Unknown — not stated by the source
Rx wavelength (max)Known for one	900 nm	Unknown — not stated by the source
Networking standardsDiffers	IEEE 802.3ba	IEEE 802.3bs
Fiber ethernet cabling technologyDiffers	100GBASE	400GBASE
Duplex systemDiffers	Full, Half	Full
Single-mode fiber (SMF) supportedKnown for one	Unknown — not stated by the source	Yes
WavelengthKnown for one	Unknown — not stated by the source	1310 nm
Features1 differ
Mean time between failures (MTBF)Differs	3003300 h	2603285 h
Power1 differ
Power consumption (typical)Differs	4 W	12 W
Weight & dimensions1 differ
DepthDiffers	117.6 mm	117.8 mm

A dash means the value is not stated by the source. Unknown values are never counted for or against a product, and there is no overall score.

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