Product comparison · 2 network transceiver modules

Allied Telesis QSFPSR4LC network transceiver module Fiber optic 40000 Mbit/s QSFP 850 nm vs Allied Telesis SPSX/E network transceiver module Fiber optic 1000 Mbit/s SFP 850 nm

17specifications compared
8differ
9identical
8known for one product only

Key differences

Maximum data transfer rate
- QSFPSR4LC network transceiver module Fiber optic 40000 Mbit/s QSFP 850 nm:40000 Mbit/s
- SPSX/E network transceiver module Fiber optic 1000 Mbit/s SFP 850 nm:1000 Mbit/s
Interface type
- QSFPSR4LC network transceiver module Fiber optic 40000 Mbit/s QSFP 850 nm:QSFP
- SPSX/E network transceiver module Fiber optic 1000 Mbit/s SFP 850 nm:SFP
Maximum transfer distance
- QSFPSR4LC network transceiver module Fiber optic 40000 Mbit/s QSFP 850 nm:150 m
- SPSX/E network transceiver module Fiber optic 1000 Mbit/s SFP 850 nm:550 m
Tx power (min)
- QSFPSR4LC network transceiver module Fiber optic 40000 Mbit/s QSFP 850 nm:-4 dBmW
- SPSX/E network transceiver module Fiber optic 1000 Mbit/s SFP 850 nm:-9 dBmW
Tx power (max)
- QSFPSR4LC network transceiver module Fiber optic 40000 Mbit/s QSFP 850 nm:5 dBmW
- SPSX/E network transceiver module Fiber optic 1000 Mbit/s SFP 850 nm:-1 dBmW
Link budget
- QSFPSR4LC network transceiver module Fiber optic 40000 Mbit/s QSFP 850 nm:7 dB
- SPSX/E network transceiver module Fiber optic 1000 Mbit/s SFP 850 nm:9 dB
Operating temperature (T-T)
- QSFPSR4LC network transceiver module Fiber optic 40000 Mbit/s QSFP 850 nm:0 - 70 °C
- SPSX/E network transceiver module Fiber optic 1000 Mbit/s SFP 850 nm:-40 - 105 °C
RX sensitivity
- QSFPSR4LC network transceiver module Fiber optic 40000 Mbit/s QSFP 850 nm:-11 dB
- SPSX/E network transceiver module Fiber optic 1000 Mbit/s SFP 850 nm:-18 dB

Side by side

Differences highlightedShow differences only

Comparison of QSFPSR4LC, SPSX/E
25 specifications	A Allied Telesis QSFPSR4LC network transceiver module Fiber optic 40000 Mbit/s QSFP 850 nm Model QSFPSR4LC View product	B Allied Telesis SPSX/E network transceiver module Fiber optic 1000 Mbit/s SFP 850 nm Model SPSX/E View product
Performance6 differ
SFP transceiver type	Fiber optic	Fiber optic
Maximum data transfer rateDiffers	40000 Mbit/s	1000 Mbit/s
Interface typeDiffers	QSFP	SFP
Multi-mode fiber (MMF) supported	Yes	Yes
Fiber optic connector	LC	LC
SFP transceiver standardKnown for one	SR4	Unknown — not stated by the source
Maximum transfer distanceDiffers	150 m	550 m
Wavelength	850 nm	850 nm
Tx power (min)Differs	-4 dBmW	-9 dBmW
Tx power (max)Differs	5 dBmW	-1 dBmW
Link budgetDiffers	7 dB	9 dB
Networking standardsKnown for one	IEEE 802.3ba	Unknown — not stated by the source
Digital Diagnostics Monitoring (DDM)Known for one	Yes	Unknown — not stated by the source
Featuresidentical
Product colour	Silver	Silver
Housing material	Metal	Metal
Hot-swap	Yes	Yes
Plug and PlayKnown for one	Unknown — not stated by the source	Yes
Poweridentical
Power consumption (typical)Known for one	1.5 W	Unknown — not stated by the source
Certificatesidentical
Compliance certificatesKnown for one	RoHS	Unknown — not stated by the source
Operational conditions1 differ
Operating temperature (T-T)Differs	0 - 70 °C	-40 - 105 °C
Storage temperature (T-T)Known for one	-40 - 85 °C	Unknown — not stated by the source
Operating relative humidity (H-H)Known for one	0 - 85%	Unknown — not stated by the source
Packaging contentidentical
Quantity per pack	1 pc(s)	1 pc(s)
Other features1 differ
RX sensitivityDiffers	-11 dB	-18 dB
Logistics dataidentical
Harmonized System (HS) code	85369010	85369010

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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