10Gtek Gigabit Multimode SFP 1000Base-SX LC Fiber Transceiver, 850nm MMF, up to 550m, for Cisco GLC-SX-MMD/SFP-GE-S, Meraki MA-SFP-1GB-SX, Ubiquiti UniFi UF-MM-1G, TP-Link TL-SM311LM (ASF85-24-X2-D)