Thanks for your question. The working principle of 40G BiDi transceiver is that the two channels complete 20G transmission and reception, so it may not be able to do or run at 10G. If you have any questions, please contact sales@fs.com.Par *** le 20/04/2019

I don't know, but my AM told me that QSFP-LX4-40G is a good alternative, it does work well if you're in urgent need.Par J***k le 04/06/2021

Due to the difference in transmission principles, the QSFP-40G-SR-BD cannot achieve transmission with the opposite QSFP-LX4-40G. You need to use QSFP-LX4-40G at both ends.Par H***n le 14/05/2021

Lead time is unknown at present. My account manager told me that the raw material is in great shortage, and the whole market is the same.Par B***n le 11/05/2021

I always purchase QSFP-BD-40G optics from FS but the lead time is very long sometimes. I needed them urgently for one of my projects, FS recommended purchasing QSFP-LX4-40G optics as an alternative solution, I took this advice, and QSFP-LX4-40G optics work as expected.Par D***e le 04/05/2021

Thanks for your question. #48722 has transmitter and receiver functions, which can transmit link data. But it does not have the function of real-time monitoring link. So the single-receiving module #65231 was developed specifically for link monitoring. #65231 is a single receiving module, it has no transmitting function. Therefore, it does not have the ability to transmit data. Par J***g le 19/08/2020

40G BIDI is transmitted by two parallel lines, so it can not provide real-time DDM information, and can only be monitored by special scheme and single receiving monitoring module #65231 ).Par L***r le 10/02/2020

Thanks for your question, confirmed that the lead time for 20pcs will be around one week. About the complete quotation, please feel assured that your account manager will email you soon, thanks.Par M***g le 08/05/2019

Besides the price advantage we have compared to branded transceivers, FS.COM compatible transceivers also maintain the same performance and reliability. To satisfy our customers' needs of high performance, all of our transceivers are tested multiple times in mainstream original brand switches in our test center before shipped out. Par T***y le 07/06/2017

Sorry, 40G QSFP+ transeivers that operate at an industrial temperature range are currently not available, but in development. Please stay tuned.Par M***a le 17/03/2018