Cisco SFP-10/25G-LR-S Compatible 10/25GBASE-LR SFP28 1310nm 10km DOM Duplex LC SMF Optical Transceiver Module

This 25G LR module on a pair of switches for a ~6km SMF link. It came up pretty much instantly and has been stable so far, no packet loss or weird drops. The build quality feels decent for the price.

We installed this 25GBASE-LR module on a fiber link a few weeks ago, and it has been running smoothly ever since. The link appeared right away after installation, and the connection has been steady every day. The monitoring shows that the optical levels are normal and there are no noticeable error issues. It has been a reliable choice for 25G long-range connections so far.

This module reliably performs at medium distances. Setting up the link is fast, and the connection stays stable even when used for a long time. The signal quality stays good, and the monitoring shows low error rates during use.

This 25GBASE-LR module delivers stable performance after deployment, establishes links quickly, and maintains consistently low bit error rates during extended use. It's perfect for medium-to-long-distance 25G links and is great value for money.

I have been using this 25GBASE-LR module for several months, and it has performed very reliably. The module offers fast recognition, generates little heat, and provides a highly reliable transmission quality. Offering excellent compatibility with original manufacturer modules, it provides outstanding value for money and is an ideal choice for expanding 25G links.

The QSFPTEK 25GBASE-LR is fully compatible with our switches and provides stable 10 km links. Installation was straightforward, and it has performed flawlessly so far. Insertion is snug, but once in place it runs without issues. It offers great value for money.

The module ports are clear and easy to connect, and the product quality control is excellent. The details are also very well done. The actual link transmission has been tested to reach 10 km. For our actual use, the signal quality is very stable, with almost no error rate, making it very suitable for use in the data aggregation layer.

Used in the core link of our data center, the transmission performance is fully up to standard, running stably at full 25G speed, without packet loss or disconnection. The transmission is very stable and worth recommending.

The module has good compatibility, seamlessly connected to my switch, and stable transmission. The packaging of this 25G module is also very tight, and it is a product worth recommending!

This 25G plug-and-play optical module is fully compatible with my switch. Before purchasing, I asked the QSFPTEK salesperson what switches this module supports. The salesperson sent me a complete test report and a compatible list. The transmission speed and signal quality are very ideal, and it is worth buying.