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 FS le 20/04/2019

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 FS le 08/05/2019

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

No, it can't. To work on 40Gbps data rate, it is recommended to link the transceiver in both connectors with a LC duplex MMF fiber cables since the 40G QSFP+ BiDi Transceivers have two 20Gbps channels, each transmitted and received simultaneously over two wavelengths on a single MMF link. Par FS le 09/03/2018

As for customized transceivers, FS.COM offers regular custom choices such as compatibility, transmission distance, operating temperature, label pattern, label colors and etc. What's more, FS.COM welcomes any inquiry for customized products and solutions for all need and specifications. Par FS le 15/07/2017

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 FS le 07/06/2017

On one hand, the FS.COM 40G QSFP+ transceivers with LC interface are used for long-distance transmission over single mode fiber, and those with MTP/MPO interface are utilized for short distance transmission over multimode fiber. On the other hand, for the FS.COM 40G QSFP+ transceivers with LC interface, they cannot be split into 4x10G as they use 4 wavelengths on a pair of single-mode fibers and do not lend themselves to “splitting” into 4 pairs without substantial complexity to split out the wavelengths. For the FS,COM 40G QSFP+ transceivers with MTP/MPO interface, they can be used in 4x10G connectivity via an external 12-fiber parallel to 2-fiber duplex breakout cable, which connects the 40G transceiver to four 10G optical interfaces. Par FS le 05/06/2017

FS.COM has been maintaining adequate stock level of the 40GBASE-SR Bi-Directional QSFP+ transceivers in U.S. warehouse, EU warehouse and CN warehouse. As long as the products you order are all in stock, we will ship them out the same day you place your order. As for some specific products or products that have a short stock, we will keep you informed ahead of time before you place your order. Par FS le 01/06/2017

The 40G BiDi transceivers use LC connectors while the QSFP+ SR4 transceiver uses MTP/MPO connectors. Therefore, all of the existing 10Gbps MMF cables can be reused, resulting in zero-cost cabling migration from 10G to 40G. Therefore, the 40G QSFP+ BiDi transceivers are cost-effective solutions in scenarios like data centers where require short-reach, limited fibers and saved operation space of 40G connectivity. Par FS le 24/05/2017

The FS.COM 40GBASE-SR Bi-Directional QSFP+ transceivers use duplex fiber patch cables with LC/UPC connectors and support OM2, OM3 and OM4 multimode fibers. Par FS le 12/05/2017