Cisco QSFP-100G-LR4-S Compatible 100GBASE-LR4 QSFP28 1310nm 10km LC Duplex SMF DDM Optical Transceiver Module

I’ve lost count of how many 100G LR4 modules I’ve purchased from QSFPTEK. One thing I know for sure—you won’t regret choosing them. Reliable products and consistent service every time

The delivery time of the package was 2 days longer than expected. The outer packaging box has slight compression marks during transportation, but the module itself is not damaged. For daily use, the cost-effectiveness is acceptable. I hope QSFPTEK can strengthen packaging in the future to avoid damage from courier and logistics companies.

I found QSFPTEK after someone's recommendation, and the product quality is very good. I use it in a data center, and I need a large quantity of stable quality products, so the quality is very important to me. In this point QSFPTEK performance is very good.

I installed the QSFP28 LR4 modules on my switches, and they work well with my network, delivering faster transmission speeds.

The sluggish market has affected our budget this quarter, and I am very happy to see that their modules are very cost-effective. I bought 1G, 10G, 40G and 100G modules, which are only a fraction of the price compared to OEM. I have been running them on switches for 3 weeks, and I have not seen any problems except that the 10G electrical port is a little hot (but this is a common problem with this product).

We are a small network service provider, so we need a lot of network equipment, as well as need to have a low enough price, QSFPTEK's products have enough price/performance ratio, and for us, also can be very perfect to ensure the quality.

QSFPTEK's 100G LR4 module is an ideal choice for users, it is plug and play, stable transmission, excellent performance. The most important thing is its price. After checking multiple websites, I decided to choose them, which is undoubtedly a good shopping experience.

Wored on Cisco C9500-32C with no issue. A great value at such a price.

Purchased this 10km QSFP28 LR4 module, 10pcs, each one is tested, for our company, save our testing process, QSFPTEK's engineers will also simulate our production environment in the lab, the module will be tested in detail.

Compared to the product, QT's service is better! I am very grateful to my account manager, who always responds to my questions in a timely manner and helps me deal with after-sales issues quickly.