Generic QSFP-ER4-40G Compatible 40GBASE-ER4 QSFP+ 1310nm 40km Optical Transceiver Module

It is the most affordable module I bought, match with OS2 SMF fibers, and ensures full compatibility with Arista equipment. I faced some configuration trouble with my equipment, and the sales manager from QT helped to solve it quickly, and kindly customer service. Thanks.

In terms of the same performance, I prefer to choose QT. The price is very competitive, making it a great value. As soon as the package arrived, I plug it into my Juniper switch and to be recognized in three seconds, amazing, and I like the vivid blue pull ring, which make it easy to plug and unplug operation.

Full compatibility with Cisco equipment, our technician gives the active evaluated feedback promptly, and support Protocols including IEEE 802.3ba, QSFP+ MSA, SFF-8436, SFF-8636, it is an ideal choice to extend 10km with full 40G speed.3 years warranty is also a friendly assurance.

I always like Huawei's products, however, something goes wrong with the logistics recently, I noticed that QT shipped from US, the first order was placed three weeks ago and arrived three days later with very fast action. I've had great success with this optical module in my Huawei device. It's fast, stable, and effortless to install. I will pay more attention for longer.

The optical module has been a great addition to my fiber optic network card. thanks very much for Talia’s suggestion, full stars for the professional customer service. In addition,I have to say that the compatibility is really excellent for many vendors.

It saved lots of expenses buying from QT, yes, friendly and affordable price compared with another vendor. 430-4593 This module worked perfectly with my Dell switch, and the DDM function is available, which means any error can be reported at once, most cost-effective module, Good.

I've been using this optical transceiver with my Juniper switch and have been very impressed with its speed and reliability. the price was very reasonable and the fast delivery also exceeded my expectations.it is a great choice for budget-conscious buyers. I think will support QT again as a loyal buyer.

This module was a breeze to set up and has worked flawlessly with my Arista network. The transceiver was designed with a 4-channel QSFP+ connector, achieving a total 40Gbps data rata speed, and the price was also very competitive, making it a great value.

My manager recommended QSFPTEK to me, then I bought HPE H3C JG325A, and the parts have passed our test on H3C equipment, I am very happy with its compatibility and performance, low power consumption of less than 0.7W, that’s good. It's a bit cheaper than other options definitely worth the investment.

Use it for video optical terminals, easy to install and has provided excellent performance without lag, what’s more, a high signal-to-noise ratio and very small nonlinear distortion,the price was also very reasonable compared to other brands I've tried, and satisfied with it.