QSFPTEK 1.25G SFP Module, 1000Base-BIDI WDM Transceiver, 3KM Simplex LC DDM, Tx1310/Rx1550nm Optical Fiber Transceiver for Cisco GLC-BX-U and GLC-BX-D, Ubiquiti, Mikrotik, D-Link, Supermicro, Netgear

Received these a while back, but have been waiting on a compatible fiber cable to test them. Finally received a 15 meter long cable yesterday, and got these two transceivers connected between two 10G switches. Then tried to test file transfer between two clients with 10G NICs, one connected to each 10G switch. Saw about 500MB/s transfer speeds when reading from an 2x M.2 nvme PCIE3 drives in a RAID1 array, and writing to an M.2 nvme PCIE4 drive.So not as close to the theoretical 10G speeds I get when both clients are connected to the same 10G switch using all copper, but better than some of the other fiber transceivers I've tested in the past.As stated, the cable I used was only 15 meters, and since these are the long range (10km) versions, I really can't comment on their ability to really reach that distance.

These QSPF transceiver modules work perfectly in the Cisco switch where installed. The connection worked the first time, and I passed all of the stress tests I could put them through. Another purchase that is worth every penny!!

Working just as they should! Getting 10G performance and both have been reliable so far.If I run into any reliability issues I will update this review!

Reutilicé un cable de fibra óptica de mi anterior ISP para conectar dos switches de 2.5GbE compatibles con SFP+ al principio tenía mis dudas y después de investigar compré unos conectores rápidos de fibra óptica LC UPC monomodo y un kit de corte de fibra óptica para poder realizar la conexión, después de prueba y error para realizar las conexiones de los conectores todo funciona súper bien!.