Does this support standard 10G Ethernet applications, or do we need special CWDM equipment?

The module is designed for 10G CWDM applications and the datasheet lists 10GBASE-ZR and 10GBASE-ZW applications. It supports up to 10.7Gbps and complies with relevant SFP+ standards including SFF-8431 and SFF-8472. For a CWDM deployment, the 1490nm optic must be paired with the appropriate optical channel and CWDM mux infrastructure.

We're using a mix of Cisco, HPE and Juniper equipment. How do we make sure the optic will be recognized correctly?

The product is offered with compatibility for multiple OEM platforms, including Cisco, HPE, Juniper, Dell, Brocade, Ciena, H3C and others. For a production order, provide the exact switch or router model so the appropriate compatible coding can be confirmed.

Is 0 to 70°C the operating temperature range? We plan to install these inside a standard data center rack.

Correct. The LS-CW4910-40C is specified for a 0 to +70°C operating case temperature range, making it suitable for standard indoor data centers, telecom rooms, server rooms and controlled network cabinets. It is the commercial-temperature version rather than the industrial-temperature model.

We already have a CWDM system with a 1490nm channel. Can this module be used directly with that wavelength plan?

Yes. The LS-CW4910-40C is specifically the 1490nm CWDM version and is designed for 10G transmission over single-mode fiber. It supports up to 40km and uses a Duplex LC interface. The far-end optic and CWDM mux/demux should use the corresponding wavelength channel for the optical path.

Can our monitoring system read TX and RX optical power from this SFP+?

Yes. The module supports DOM/DDM through the SFF-8472 diagnostic interface. Supported host equipment can read parameters such as module temperature, supply voltage, laser bias current, TX optical power and RX optical power for remote link monitoring and troubleshooting.

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H3C CWDM-SFP10G-1490-40 Compatible LINK-PP 10G SFP+ CWDM 1490nm 40km DOM Duplex LC SMF Optical Transceiver Module

Name: H3C CWDM-SFP10G-1490-40 Compatible LINK-PP 10G SFP+ CWDM 1490nm 40km DOM Duplex LC SMF Optical Transceiver Module
Brand: LINK-PP
SKU: 223847
Price: 220.16 USD
Availability: InStock
Rating: 4.9 (31 reviews)

# 223847

Product: H3C CWDM-SFP10G-1490-40 Compatible LINK-PP 10G SFP+ CWDM 1490nm 40km DOM Duplex LC SMF Optical Transceiver Module
SKU: 223847
P/N: LS-CW4910-40C
Price: $ 256
Stock: 354 in Stock
Sold: 793
Product URL: https://www.l-p.com/products/483444.htm

For Order Over $1000 Get $15.00 Off , Code: Linkpp15

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Compatible:: Cisco; LINK-PP; Alcatel-Lucent; Brocade; Ciena; Dell; FS; Generic; H3C; HPE; Juniper

Wavelength:: 1270nm; 1290nm; 1310nm; 1330nm; 1350nm; 1370nm; 1390nm; 1410nm; 1430nm; 1450nm; 1470nm; 1490nm; 1510nm; 1530nm; 1550nm; 1570nm; 1590nm; 1610nm

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H3C CWDM-SFP10G-1490-40 Compatible LINK-PP 10G SFP+ Specifications

The H3C CWDM-SFP10G-1490-40 Compatible LINK-PP 10G SFP+ transceiver delivers dependable 10Gbps performance at the 1490nm CWDM wavelength and supports long-reach links up to 40km over single-mode fiber. Compact and hot-pluggable, it enables rapid rollout of high-speed optical connections for LINK-PP-compatible systems.

H3C Part Number	CWDM-SFP10G-1490-40	Vendor Name	LINK-PP
Form Factor	SFP+	Max Data Rate	10Gbps
Wavelength	1490nm	Max Cable Distance	40km
Connector	Duplex LC	Media	SMF
Transmitter Type	EML	Receiver Type	PIN
TX Power	-1 to +5dBm	RX Power	-23 to -6dBm
Receiver Sensitivity	<-16dBm	Receiver Overload	0dBm
Operating Temperature Range	0 to 70°C	Protocols	SFP+ MSA Compliant, SFF 8472,SFF 8431,802.3ae, ITU-T

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Q: Does this support standard 10G Ethernet applications, or do we need special CWDM equipment? By P***r on 2026-05-15

A: The module is designed for 10G CWDM applications and the datasheet lists 10GBASE-ZR and 10GBASE-ZW applications. It supports up to 10.7Gbps and complies with relevant SFP+ standards including SFF-8431 and SFF-8472. For a CWDM deployment, the 1490nm optic must be paired with the appropriate optical channel and CWDM mux infrastructure. By admin on 2026-05-16
Q: We're using a mix of Cisco, HPE and Juniper equipment. How do we make sure the optic will be recognized correctly? By R***e on 2025-07-12

A: The product is offered with compatibility for multiple OEM platforms, including Cisco, HPE, Juniper, Dell, Brocade, Ciena, H3C and others. For a production order, provide the exact switch or router model so the appropriate compatible coding can be confirmed. By admin on 2025-07-12
Q: Is 0 to 70°C the operating temperature range? We plan to install these inside a standard data center rack. By T***s on 2024-09-20

A: Correct. The LS-CW4910-40C is specified for a 0 to +70°C operating case temperature range, making it suitable for standard indoor data centers, telecom rooms, server rooms and controlled network cabinets. It is the commercial-temperature version rather than the industrial-temperature model. By admin on 2024-09-21
Q: We already have a CWDM system with a 1490nm channel. Can this module be used directly with that wavelength plan? By H***n on 2024-09-08

A: Yes. The LS-CW4910-40C is specifically the 1490nm CWDM version and is designed for 10G transmission over single-mode fiber. It supports up to 40km and uses a Duplex LC interface. The far-end optic and CWDM mux/demux should use the corresponding wavelength channel for the optical path. By admin on 2024-09-08
Q: Can our monitoring system read TX and RX optical power from this SFP+? By D***s on 2024-05-27

A: Yes. The module supports DOM/DDM through the SFF-8472 diagnostic interface. Supported host equipment can read parameters such as module temperature, supply voltage, laser bias current, TX optical power and RX optical power for remote link monitoring and troubleshooting. By admin on 2024-05-28

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G***s

Canada

Verified Purchase

5 .0

2026-04-18

Easy install. =)

5 Helpful vote Comments

H***l

Russian Federation

Verified Purchase

5 .0

2026-03-18

Works nicely for long fiber runs.

81 Helpful vote Comments

T***s

Ukraine

Verified Purchase

5 .0

2026-01-17

We deployed these on a 10G CWDM ring between several aggregation points. The 1490nm channel matched our wavelength plan, and the 40km SMF reach covered the longest span with room to spare. Link testing was clean, and DOM readings were available through the switch.

91 Helpful vote Comments

S***h

Hong Kong

Verified Purchase

5 .0

2026-01-05

Nice option for mixed-brand networks.

14 Helpful vote Comments

J***s

Japan

Verified Purchase

5 .0

2025-12-13

We ordered these for a data center interconnect test using single-mode fiber. The actual distance is well below 40km, but the extra reach gives us flexibility if the topology changes later. The 1490nm channel was the key requirement, and the modules worked without issues during extended testing.

37 Helpful vote Comments

S***e

Brunei Darussalam

Verified Purchase

5 .0

2025-09-24

This was a good fit for our metro fiber project. We already had CWDM equipment in place and specifically needed the 1490nm channel. Rather than replacing the optical platform, we added these modules to the existing setup. The 40km reach and Duplex LC interface matched our deployment requirements very well.

81 Helpful vote Comments

A***k

Belgium

Verified Purchase

5 .0

2025-09-03

We used the LS-CW4910-40C for a remote office uplink where the fiber route is around 32km. The 40km specification gave us a comfortable margin, while the 0 to 70°C temperature range is suitable for the controlled telecom room. The module was recognized immediately by our switch.

47 Helpful vote Comments

M***s

Finland

Verified Purchase

5 .0

2025-08-19

Plugged in and worked. ;)

1 Helpful vote Comments

A***s

New Zealand

Verified Purchase

5 .0

2025-07-12

Good 10G CWDM option.

76 Helpful vote Comments

G***s

Iran, Islamic Republic of

Verified Purchase

5 .0

2025-05-12

Stable under load. :D

47 Helpful vote Comments

P***s

Indonesia

Verified Purchase

5 .0

2025-02-10

Our NOC team likes the DOM capability because we can check the health of the optic without sending someone to the cabinet. We regularly monitor temperature, TX power and RX power on long-distance links. These modules have been straightforward to integrate into that workflow.

20 Helpful vote Comments

M***e

Singapore

Verified Purchase

5 .0

2024-12-06

Items arrived on time.Very good.

71 Helpful vote Comments

A***s

Finland

Verified Purchase

5 .0

2024-12-04

Solid 1490nm optic. :)

45 Helpful vote Comments

R***n

Belgium

Verified Purchase

5 .0

2024-12-01

Our team needed a 1490nm SFP+ module for an existing CWDM system, not a standard 1310nm optic. This one fit the requirement exactly. We reused the existing Duplex LC single-mode fiber and had a stable 10Gbps connection after configuration.

31 Helpful vote Comments

A***r

Netherlands

Verified Purchase

5 .0

2024-09-28

We bought a small batch for a multi-vendor lab test. The modules were tested in Cisco, HPE and Juniper environments, and the SFP+ interfaces came up normally. We also checked TX/RX optical readings through DOM before moving them into production.

87 Helpful vote Comments

A***n

Argentina

Verified Purchase

5 .0

2024-08-27

Good fit for our CWDM upgrade.

54 Helpful vote Comments

A***s

Turkey

Verified Purchase

5 .0

2024-06-12

Products arrived early and exactly as advertised. I was asked to rate the seller immediately after placing my order. Not knowing how Fast or precisely my order would be handled, I did not have enough info to rate the company. Since my order has arrived I can say everything was excellent. I will shop here again.

74 Helpful vote Comments

W***e

Belgium

Verified Purchase

4 .0

2024-05-13

Shipping was slower than expected for our initial order, so we lost some time during the installation schedule. The transceiver itself has been fine. We tested the 10G connection over single-mode fiber and confirmed stable operation, so the four-star rating is only related to delivery timing.

85 Helpful vote Comments

C***s

Thailand

Verified Purchase

5 .0

2024-04-04

I checked out l-p.com references on several forums and it had nothing but good reviews.

49 Helpful vote Comments

D***k

Israel

Verified Purchase

5 .0

2024-04-04

The 1490nm wavelength was the main reason we selected this model. Our CWDM design already had other channels occupied, so getting the correct wavelength was critical. After installation, the link came up cleanly and the module reported useful DOM information to the network monitoring system.

32 Helpful vote Comments

C***n

Italy

Verified Purchase

5 .0

2024-03-30

The package arrived with a slightly scuffed outer box, but the optics inside were properly protected. We tested the module on a 10G single-mode link before installation and everything checked out. No issue with the actual product or optical performance.

15 Helpful vote Comments

W***u

United States

Verified Purchase

5 .0

2024-03-16

The entire team was super helpful ,It was delivered very Fast and work perfectly with my switch. I would definitely buy from l-p.com again.

16 Helpful vote Comments

H***l

Mexico

Verified Purchase

5 .0

2024-03-16

We used these for 10G backhaul connections from several remote network sites. The 40km transmission rating is useful because some of our routes have changing fiber paths and we wanted additional distance margin. The modules have performed reliably so far, with stable optical readings during normal traffic.

91 Helpful vote Comments

G***z

Canada

Verified Purchase

5 .0

2024-02-09

Good value for a 40km optic.

1 Helpful vote Comments

A***n

Hong Kong

Verified Purchase

5 .0

2023-12-30

I have ordered 10 of these and my experience has been perfect. I used them in a combination of Meraki and Cisco switches and they have all performed perfectly.

83 Helpful vote Comments

M***n

Singapore

Verified Purchase

5 .0

2023-10-05

Very happy with everything! I will come again.

57 Helpful vote Comments

T***t

Austria

Verified Purchase

4 .0