Can this 1270nm CWDM SFP+ module work in a Cisco switch with an existing 40km single-mode fiber link?

Yes, the product page lists Cisco compatibility, and the module is designed as a 10G SFP+ CWDM optic with a 1270nm wavelength, Duplex LC interface and SMF support up to 40km. For a production deployment, we would still recommend confirming the exact Cisco switch model and required CWDM channel before ordering.

We are putting optics in outdoor cabinets. Does the industrial version actually support wide temperature conditions, and can we monitor the optic remotely?

Yes. The specified operating case temperature is -40 to +85°C. The module also supports real-time digital diagnostic monitoring, including temperature, supply voltage, bias current, TX optical power and RX optical power, which is useful for remote NOC monitoring and field maintenance.

Does the module support standard 10G applications, or is it only intended for CWDM networks?

It is designed for 10G CWDM optical systems and also lists 10GBASE-ZR at 10.3125Gbps, 10GBASE-ZW at 9.953Gbps and LTE systems among its applications. The module supports up to 10.7Gbps, uses a hot-pluggable SFP+ footprint and complies with SFP+ MSA and SFF-8472.

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HPE CWDM-SFP10G-1270-I Compatible LINK-PP 10G SFP+ CWDM 1270nm 40km DOM Duplex LC SMF Optical Transceiver Module (Industrial)

Name: HPE CWDM-SFP10G-1270-I Compatible LINK-PP 10G SFP+ CWDM 1270nm 40km DOM Duplex LC SMF Optical Transceiver Module (Industrial)
Brand: LINK-PP
SKU: 223838
Price: 176.3 USD
Availability: InStock
Rating: 5 (24 reviews)

# 223838

Product: HPE CWDM-SFP10G-1270-I Compatible LINK-PP 10G SFP+ CWDM 1270nm 40km DOM Duplex LC SMF Optical Transceiver Module (Industrial)
SKU: 223838
P/N: LS-CW2710-40I
Price: $ 205
Stock: 1164 in Stock
Sold: 2K
Product URL: https://www.l-p.com/products/495107.htm

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Manufacture: LINK-PP

P/N: LS-CW2710-40I

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

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

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HPE CWDM-SFP10G-1270-I Compatible LINK-PP 10G SFP+ Specifications

The HPE CWDM-SFP10G-1270-I Compatible LINK-PP 10G SFP+ optical transceiver module supports data rates of up to 10.7Gbps over single-mode fiber (SMF) and has a transmission range of up to 40km at a wavelength of 1270nm.

HPE Part Number	CWDM-SFP10G-1270-I	Vendor Name	LINK-PP
Form Factor	SFP+	Max Data Rate	10.7Gbps
Wavelength	1270nm	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	DOM Support	Yes
Operating Temperature Range	-40 to 85°C	Protocols	SFP+ MSA, CPRI, eCPRI, SFF-8431, SFF-8472, RoHS, ITU-T G.652

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Q: Can this 1270nm CWDM SFP+ module work in a Cisco switch with an existing 40km single-mode fiber link? By J***s on 2026-06-15

A: Yes, the product page lists Cisco compatibility, and the module is designed as a 10G SFP+ CWDM optic with a 1270nm wavelength, Duplex LC interface and SMF support up to 40km. For a production deployment, we would still recommend confirming the exact Cisco switch model and required CWDM channel before ordering. By admin on 2026-06-16
Q: We are putting optics in outdoor cabinets. Does the industrial version actually support wide temperature conditions, and can we monitor the optic remotely? By J***s on 2025-07-28

A: Yes. The specified operating case temperature is -40 to +85°C. The module also supports real-time digital diagnostic monitoring, including temperature, supply voltage, bias current, TX optical power and RX optical power, which is useful for remote NOC monitoring and field maintenance. By admin on 2025-07-28
Q: Does the module support standard 10G applications, or is it only intended for CWDM networks? By I***n on 2025-05-17

A: It is designed for 10G CWDM optical systems and also lists 10GBASE-ZR at 10.3125Gbps, 10GBASE-ZW at 9.953Gbps and LTE systems among its applications. The module supports up to 10.7Gbps, uses a hot-pluggable SFP+ footprint and complies with SFP+ MSA and SFF-8472. By admin on 2025-05-18

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A***n

Macao

Verified Purchase

5 .0

2025-12-31

Our team tested the LS-CW2710-40I with several multi-vendor switches before approving it for production. Cisco, Juniper and Dell platforms all established the expected 10G connection in our test matrix. Optical diagnostics were readable, and we had no packet-loss issues during extended traffic testing.

13 Helpful vote Comments

N***s

Malaysia

Verified Purchase

5 .0

2025-12-30

Good value for long-distance 10G.

46 Helpful vote Comments

M***s

Iran, Islamic Republic of

Verified Purchase

5 .0

2025-10-27

Used these in a small data center expansion with several racks of 10G switches. The Duplex LC interface fit our existing patch panels, and the modules were detected correctly across different switch brands during our compatibility checks. DOM is especially useful for ongoing maintenance. :)

63 Helpful vote Comments

P***n

Poland

Verified Purchase

5 .0

2025-06-25

Worked first try. =D

19 Helpful vote Comments

S***n

Philippines

Verified Purchase

5 .0

2025-05-27

We deployed a batch of LS-CW2710-40I modules across a mixed Cisco and HPE environment. The SFP+ ports recognized them without any issues, and the 10Gbps links stayed stable during several days of traffic testing. For a 40km single-mode fiber run, these have been very reliable.

45 Helpful vote Comments

O***l

Libyan Arab Jamahiriya

Verified Purchase

5 .0

2025-04-06

Nice optics for the money.

76 Helpful vote Comments

J***e

India

Verified Purchase

5 .0

2025-03-01

We tested these against Cisco-compatible switch ports and had no coding or link-up problems. The 1270nm CWDM channel was exactly what our fiber plan required. After the initial test, we ordered additional units for the remaining aggregation links.

92 Helpful vote Comments

M***n

Cocos (Keeling) Islands

Verified Purchase

5 .0

2025-01-07

Processed order and shipped as promised. Will buy again from this merchant. Very happy.

46 Helpful vote Comments

A***s

Brunei Darussalam

Verified Purchase

5 .0

2024-10-23

Good choice for 40km 10G links.

9 Helpful vote Comments

J***l

United Kingdom

Verified Purchase

5 .0

2024-08-05

Excellent service. 10/25/40G Transceiver Modules arrived Faster than expected, appropriately packaged, and have significantly improved data transfer speed.

48 Helpful vote Comments

B***s

Brazil

Verified Purchase

5 .0

2024-07-06

We use CWDM to carry multiple wavelengths over the same single-mode fiber infrastructure. This 1270nm SFP+ module integrated cleanly into the existing setup and maintained a stable 10G link. The SFF-8472 diagnostics are useful for our NOC team because we can monitor optic health remotely.

86 Helpful vote Comments

P***t

Italy

Verified Purchase

5 .0

2024-05-27

l-p.com gave me choices and options that I couldn't find anywhere else; the website is a marvelous resource for comparing and choosing 100BASE 10/25/40G Transceiver Modules. They also provide a great deal of information that helped me to make my choice. I highly recommend this company.

26 Helpful vote Comments

K***t

Taiwan, Province of China

Verified Purchase

5 .0

2024-04-27

For a regional network upgrade, we needed 10G CWDM optics that could work across different OEM switch platforms. These modules made the procurement much easier because we could standardize the same optic across multiple compatible environments. The DOM readings are also helpful when monitoring fiber attenuation and receive levels.

64 Helpful vote Comments

S***n

Bangladesh

Verified Purchase

5 .0

2024-02-19

They have had all the parts i have needed and shipped them out right away with no delay.

53 Helpful vote Comments

E***l

France

Verified Purchase

5 .0

2024-02-10

Reliable module.

19 Helpful vote Comments

R***n

United States

Verified Purchase

5 .0

2024-01-06

Very good for crimping, not bad for cutting,

12 Helpful vote Comments

E***g

United States

Verified Purchase

5 .0

2023-11-26

Searching and purchasing was very easy at Link-pp.

35 Helpful vote Comments

S***n

Norway

Verified Purchase

5 .0

2023-10-30

I spent a lot of time looking at the 1000 Base-T Optical Transceiver Module and finally decided on l-p.com. The website was very well done so that eased my mind a bit. When the 1000 Base-T Optical Transceiver Module arrived I was pleased that they looked just as good as it did on the website and worked without problem.

71 Helpful vote Comments

m***s

Netherlands

Verified Purchase

5 .0

2023-09-24

My contact with LINK-PP involved more than just a few clicks and a purchase for 1000Base-T Optical Transceiver Module. I had to make a return for no fault of the Company and they were helpful and courteous throughout the process. I am quite pleased.

18 Helpful vote Comments

P***s

Ireland

Verified Purchase

5 .0

2023-09-02

Very surprised with the Fast shipping. Great shopping experience with LINK-PP!

82 Helpful vote Comments

B***g

Malaysia

Verified Purchase

5 .0

2023-08-16

The price was low but the quality was better than expected. They were an excellent value for my money. Highly recommend!

51 Helpful vote Comments

R***y

Hong Kong

Verified Purchase

5 .0

2023-07-25

sent the wrong item for my order at first time, but finally they tackled it and gave me the correct one.

101 Helpful vote Comments

T***i

Philippines

Verified Purchase

5 .0

2023-02-24

I have used them immediately upon receipt. They work great and I will be placing an order for more soon I hope. Once I move into my new location and need to do a little rewiring.

100 Helpful vote Comments

S***g

Libyan Arab Jamahiriya

Verified Purchase

5 .0

2023-02-03

Easy to navigate

18 Helpful vote Comments