Product comparison · 2 network transceiver modules

D-Link 40GBase-SR4 QSFP+ Multi-mode Transceiver, 100M/ 150M vs D-Link 40GBase-LR4 QSFP+ Single-Mode Transceiver, 10km

Key differences

Single-mode fiber (SMF) supported
- 40GBase-SR4 QSFP+ Multi-mode Transceiver, 100M/ 150M:No
- 40GBase-LR4 QSFP+ Single-Mode Transceiver, 10km:Yes
Multi-mode fiber (MMF) supported
- 40GBase-SR4 QSFP+ Multi-mode Transceiver, 100M/ 150M:Yes
- 40GBase-LR4 QSFP+ Single-Mode Transceiver, 10km:No
Fiber optic connector
- 40GBase-SR4 QSFP+ Multi-mode Transceiver, 100M/ 150M:MPO
- 40GBase-LR4 QSFP+ Single-Mode Transceiver, 10km:LC
SFP transceiver standard
- 40GBase-SR4 QSFP+ Multi-mode Transceiver, 100M/ 150M:SR4
- 40GBase-LR4 QSFP+ Single-Mode Transceiver, 10km:LR4
Maximum transfer distance
- 40GBase-SR4 QSFP+ Multi-mode Transceiver, 100M/ 150M:150 m
- 40GBase-LR4 QSFP+ Single-Mode Transceiver, 10km:10000 m
Wavelength
- 40GBase-SR4 QSFP+ Multi-mode Transceiver, 100M/ 150M:850 nm
- 40GBase-LR4 QSFP+ Single-Mode Transceiver, 10km:1310 nm
Tx power (min)
- 40GBase-SR4 QSFP+ Multi-mode Transceiver, 100M/ 150M:-7.6 dBmW
- 40GBase-LR4 QSFP+ Single-Mode Transceiver, 10km:-4 dBmW
Tx power (max)
- 40GBase-SR4 QSFP+ Multi-mode Transceiver, 100M/ 150M:2.4 dBmW
- 40GBase-LR4 QSFP+ Single-Mode Transceiver, 10km:8.3 dBmW

Differences highlightedShow differences only

Comparison of DEM-QX01Q-SR4, DEM-QX10Q-LR4
56 specifications	A D-Link 40GBase-SR4 QSFP+ Multi-mode Transceiver, 100M/ 150M Model DEM-QX01Q-SR4 View product	B D-Link 40GBase-LR4 QSFP+ Single-Mode Transceiver, 10km Model DEM-QX10Q-LR4 View product
Performance12 differ
Single-mode fiber (SMF) supportedDiffers	No	Yes
Multi-mode fiber (MMF) supportedDiffers	Yes	No
Fiber optic connectorDiffers	MPO	LC
Fiber cable diameters supported (core/cladding)Known for one	Unknown — not stated by the source	9/125 µm
SFP transceiver standardDiffers	SR4	LR4
Maximum transfer distanceDiffers	150 m	10000 m
WavelengthDiffers	850 nm	1310 nm
Tx power (min)Differs	-7.6 dBmW	-4 dBmW
Tx power (max)Differs	2.4 dBmW	8.3 dBmW
Rx power (min)Differs	-9.5 dBmW	3.5 dBmW
Rx power (max)Differs	2.4 dBmW	-13.7 dBmW
Link budgetDiffers	11.9 dB	19.8 dB
Ethernet interface typeDiffers	40 Gigabit Ethernet	400 Gigabit Ethernet
Duplex systemKnown for one	Unknown — not stated by the source	Full
Features1 differ
Product colourDiffers	Beige, Metallic	Blue, Silver
Power1 differ
Maximum currentDiffers	0.35 A	1.13 A
Operational conditions1 differ
Storage temperature (T-T)Differs	-10 - 75 °C	-40 - 85 °C
Weight & dimensions2 differ
DepthDiffers	115.8 mm	118 mm
HeightDiffers	13.3 mm	12.9 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.