The datasheet not specify the latency, do you have any document that show this parameter. thank you

Yes Received. Very good product, well packed, happy with order. FS was the only supplier that could supply my spec/request.

These switches are rock-solid. They just work, day-in and day-out.

The hot-swappable power supplies and fan are a huge plus. Makes maintenance a breeze.

I put the new switches in service immediately. They are working as needed and so are the transceivers. I have to say I am very impressed with the quality of the product.

Well for me, I can only say that your customer service has been Extraordinary considering your in China and we are in the United Kingdom.The service has been 10 Stars out of 5!!!It has been a real pleasure to work with you.
I just want to say how I really appreciate all the help you guys have given me!!