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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Dell 430-4585-CW27-I Compatible LINK-PP 10G SFP+ CWDM 1270nm 40km DOM Duplex LC SMF Optical Transceiver Module (Industrial)

Name: Dell 430-4585-CW27-I Compatible LINK-PP 10G SFP+ CWDM 1270nm 40km DOM Duplex LC SMF Optical Transceiver Module (Industrial)
Brand: LINK-PP
SKU: 223834
Price: 176.3 USD
Availability: InStock
Rating: 5 (26 reviews)

# 223834

Product: Dell 430-4585-CW27-I Compatible LINK-PP 10G SFP+ CWDM 1270nm 40km DOM Duplex LC SMF Optical Transceiver Module (Industrial)
SKU: 223834
P/N: LS-CW2710-40I
Price: $ 205
Stock: 1185 in Stock
Sold: 1.7K
Product URL: https://www.l-p.com/products/495109.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; 1390nm; 1410nm; 1430nm; 1450nm; 1470nm; 1490nm; 1510nm; 1530nm; 1550nm; 1570nm; 1590nm; 1610nm

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Dell 430-4585-CW27-I Compatible LINK-PP 10G SFP+ Specifications

The Dell 430-4585-CW27-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.

Dell Part Number	430-4585-CW27-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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LS-CWxx10-40I 1270-1610.pdf

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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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E***y

Canada

Verified Purchase

5 .0

2026-07-10

We originally purchased a small quantity for compatibility testing and later expanded the order after successful validation. The 10.7Gbps maximum data-rate specification, 40km SMF reach and SFP+ MSA compliance fit our requirements well. They have been running continuously without unexpected link drops.

31 Helpful vote Comments

D***l

Bulgaria

Verified Purchase

5 .0

2026-06-27

The price is reasonable compared with buying equivalent OEM-coded optics. We tested them in our lab before production deployment and found the 1270nm channel stable over our CWDM setup. For a 40km 10G optical transceiver, the overall value is good.

65 Helpful vote Comments

L***n

Iran, Islamic Republic of

Verified Purchase

5 .0

2026-01-26

The modules performed as expected on a 10GbE connection over single-mode fiber. We checked optical levels through DOM after installation and saw stable readings. This is a good option when you need a 10G CWDM 1270nm optic for a longer campus or metro-style fiber run.

68 Helpful vote Comments

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

Brunei Darussalam

Verified Purchase

5 .0

2025-09-23

I bought these for a 10G fiber connection between a main office and a remote facility. The link came up immediately, and DOM gave us enough information to verify the optical condition without connecting a separate test instrument. Very practical for field support. :-)

65 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

R***l

Iran, Islamic Republic of

Verified Purchase

5 .0

2024-12-18

Deployed in a network cabinet where temperatures can fluctuate significantly. The industrial temperature specification was important for us, and the modules remained stable through the environmental test. The 40km SMF reach also gives us useful headroom for future site expansion.

60 Helpful vote Comments

A***s

Brunei Darussalam

Verified Purchase

5 .0

2024-10-23

Good choice for 40km 10G links.

9 Helpful vote Comments

N***n

Japan

Verified Purchase

5 .0

2024-08-20

We needed a long-reach 10G SFP+ transceiver for a campus fiber backbone without replacing the existing SMF. The 1270nm CWDM wavelength worked with our channel plan, and the 40km rating gave us plenty of margin for the actual link distance. Installation was straightforward.

93 Helpful vote Comments

B***l

Japan

Verified Purchase

5 .0

2024-08-09

These are now part of our standard spare stock for long-distance 10G SFP+ deployments. The industrial temperature range is useful for equipment installed outside the main data room, while DOM helps us troubleshoot RX power and temperature remotely. The pricing also works well for larger rollouts.

7 Helpful vote Comments

W***r

Austria

Verified Purchase

5 .0

2024-06-09

Solid 40km link. :)

77 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

P***n

Turkey

Verified Purchase

5 .0

2024-03-16

Customer service rep was very pleasant and accomodating.

62 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

G***s

Ireland

Verified Purchase

5 .0

2024-01-24

We installed a pair on a long campus fiber route connecting an aggregation switch to a remote building. The 1270nm wavelength and Duplex LC interface matched our existing CWDM equipment, so there was no need to change the fiber plant. Link stability has been excellent under normal production traffic.

14 Helpful vote Comments

M***s

United States

Verified Purchase

5 .0

2023-12-29

I trust Link-pp, and have bought from them many times.

11 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

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

M***S

United States

Verified Purchase

5 .0

2023-07-28

That was easy no fuss no muss THANK YOU.

23 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

G***e

Germany

Verified Purchase

5 .0

2023-03-12

I needed the sfp cage quickly. Did not want to spend a whole lot of time trying to muddle through a complicated website looking for what I wanted. LINK-PP did just that. Up to this point I did not have a favorite site for my needs. Now I do.

76 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