Multi-mode Mini GBICLC interface. Up to 550/275m distance. Supports full-duplex. LED indicators show the operation state of the fiber module. Applied to TL-SG3109/3216/3224 TL-SL3428/3452 TL-SG2109WEB / 2216WEB / 2224WEB TL-SL2210WEB / 2218WEB / 2428WEB / 2452WEB TL-SL1351.