Product comparison · 2 network transceiver modules

TP-Link ISM311LS network transceiver module Fiber optic 1250 Mbit/s SFP 1310 nm vs TP-Link ISM321B-20 network transceiver module Fiber optic 1250 Mbit/s SFP

Key differences

Fiber optic connector
- ISM311LS network transceiver module Fiber optic 1250 Mbit/s SFP 1310 nm:LC
- ISM321B-20 network transceiver module Fiber optic 1250 Mbit/s SFP:LC (UPC)

Differences highlightedShow differences only

Comparison of ISM311LS, ISM321B-20
23 specifications	A TP-Link ISM311LS network transceiver module Fiber optic 1250 Mbit/s SFP 1310 nm Model ISM311LS View product	B TP-Link ISM321B-20 network transceiver module Fiber optic 1250 Mbit/s SFP Model ISM321B-20 View product
Performance1 differ
SFP transceiver type	Fiber optic	Fiber optic
Maximum data transfer rate	1250 Mbit/s	1250 Mbit/s
Interface type	SFP	SFP
Single-mode fiber (SMF) supported	Yes	Yes
Fiber optic connectorDiffers	LC	LC (UPC)
Fiber cable diameters supported (core/cladding)	9/125 µm	9/125 µm
Maximum transfer distance	20000 m	20000 m
WavelengthKnown for one	1310 nm	Unknown — not stated by the source
Ethernet interface type	1.25 Gigabit Ethernet	1.25 Gigabit Ethernet
Networking standards	IEEE 802.3z	IEEE 802.3z
Featuresidentical
Product colour	Grey	Grey
Hot-swap	Yes	Yes
Poweridentical
Input voltage	3.3 V	3.3 V
Certificatesidentical
Certification	FCC, CE	FCC, CE
Operational conditionsidentical
Minimum operating temperature	-40 °C	-40 °C
Maximum operating temperature	85 °C	85 °C
Storage temperature (T-T)	-40 - 85 °C	-40 - 85 °C
Operating relative humidity (H-H)	5 - 85%	5 - 85%
Storage relative humidity (H-H)	5 - 85%	5 - 85%
Weight & dimensionsidentical
Width	56.4 mm	56.4 mm
Depth	13.4 mm	13.4 mm
Height	11 mm	11 mm
Packaging contentidentical
Quantity per pack	1 pc(s)	1 pc(s)

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.