10Gtek for Cisco GLC-SX-MMD/GLC-SX-MM/SFP-GE-S, Gigabit SFP SX Transceiver, 1000Base-SX, MMF, 850nm, 550m, Pack of 4

I have ordered loads of these transceivers. And so far, I have yet to come across a device that doesn't like them. Works in brands like ASUS, QNAP, Mikrotik, Sonore and too many media converters to list. I really like these due to their reliability (using my first pair since early May of 2021 and they just work right out of the box. Not 'plug and pray' like some others I've bought!

I had no issues installing and getting these SFPs to work. Excellent product for the cost!

Installed 4 modules in 802.3ad between an Engenius EWS1200-28T and an Engenius EWS1200D-10T. It was plug and play and works great with 10 Gigabit Aqua Fiber Optic Cable, LC/LC, Multimode, Duplex (#B01735WPSE). Photo: Engenius EWS1200D-10T with 10Gtek modules installed and connected with 10Gb LC multimode fiber.

Works in my Cisco SG300 series switch. Works in my BV-tech PoE switch. Works in my 10Gtek media converter. Just plug in and go. At least so far I can only say good things about these.

This is not compatible with the Meraki MS210, although it says it is it will not work.