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.