Product comparison · 2 network transceiver modules

Legrand Arista Networks[R] 40GBASE-XSR4 Compatible TAA compliant 40GBase-SR4 QSFP+ Transceiver (MMF, 850nm, 300m, MPO) vs Legrand Cisco[R] GLC-BX-D-40 Compatible TAA Compliant 1000Base-BX SFP Transceiver (SMF, 1550nmTx/1310nmRx, 40km, LC, DOM)

Key differences

Maximum data transfer rate
- Arista Networks[R] 40GBASE-XSR4 Compatible TAA compliant 40GBase-SR4 QSFP+ Transceiver (MMF, 850nm, 300m, MPO):40000 Mbit/s
- Cisco[R] GLC-BX-D-40 Compatible TAA Compliant 1000Base-BX SFP Transceiver (SMF, 1550nmTx/1310nmRx, 40km, LC, DOM):1000 Mbit/s
Interface type
- Arista Networks[R] 40GBASE-XSR4 Compatible TAA compliant 40GBase-SR4 QSFP+ Transceiver (MMF, 850nm, 300m, MPO):QSFP+
- Cisco[R] GLC-BX-D-40 Compatible TAA Compliant 1000Base-BX SFP Transceiver (SMF, 1550nmTx/1310nmRx, 40km, LC, DOM):SFP
Fiber optic connector
- Arista Networks[R] 40GBASE-XSR4 Compatible TAA compliant 40GBase-SR4 QSFP+ Transceiver (MMF, 850nm, 300m, MPO):MPO
- Cisco[R] GLC-BX-D-40 Compatible TAA Compliant 1000Base-BX SFP Transceiver (SMF, 1550nmTx/1310nmRx, 40km, LC, DOM):LC
Maximum transfer distance
- Arista Networks[R] 40GBASE-XSR4 Compatible TAA compliant 40GBase-SR4 QSFP+ Transceiver (MMF, 850nm, 300m, MPO):300 m
- Cisco[R] GLC-BX-D-40 Compatible TAA Compliant 1000Base-BX SFP Transceiver (SMF, 1550nmTx/1310nmRx, 40km, LC, DOM):40000 m
Product colour
- Arista Networks[R] 40GBASE-XSR4 Compatible TAA compliant 40GBase-SR4 QSFP+ Transceiver (MMF, 850nm, 300m, MPO):Silver
- Cisco[R] GLC-BX-D-40 Compatible TAA Compliant 1000Base-BX SFP Transceiver (SMF, 1550nmTx/1310nmRx, 40km, LC, DOM):Grey

Differences highlightedShow differences only

Comparison of 40GBASEXSR4AR-LEG, GLC-BX-D-40-LEG
18 specifications	A Legrand Arista Networks[R] 40GBASE-XSR4 Compatible TAA compliant 40GBase-SR4 QSFP+ Transceiver (MMF, 850nm, 300m, MPO) Model 40GBASEXSR4AR-LEG View product	B Legrand Cisco[R] GLC-BX-D-40 Compatible TAA Compliant 1000Base-BX SFP Transceiver (SMF, 1550nmTx/1310nmRx, 40km, LC, DOM) Model GLC-BX-D-40-LEG View product
Performance4 differ
Maximum data transfer rateDiffers	40000 Mbit/s	1000 Mbit/s
Interface typeDiffers	QSFP+	SFP
Multi-mode fiber (MMF) supportedKnown for one	Yes	Unknown — not stated by the source
Fiber optic connectorDiffers	MPO	LC
Maximum transfer distanceDiffers	300 m	40000 m
WavelengthKnown for one	850 nm	Unknown — not stated by the source
Duplex systemKnown for one	Full	Unknown — not stated by the source
Single-mode fiber (SMF) supportedKnown for one	Unknown — not stated by the source	Yes
SFP transceiver standardKnown for one	Unknown — not stated by the source	BX
Tx power (max)Known for one	Unknown — not stated by the source	1550 dBmW
Rx power (max)Known for one	Unknown — not stated by the source	1310 dBmW
Features1 differ
Product colourDiffers	Silver	Grey
Hot-Plug supportKnown for one	Yes	Unknown — not stated by the source
Poweridentical
Maximum voltageKnown for one	3.3 V	Unknown — not stated by the source
Power consumption (typical)Known for one	1.5 W	Unknown — not stated by the source
Operational conditionsidentical
Operating temperature (T-T)Known for one	0 - 70 °C	Unknown — not stated by the source

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.