The fibreglass cards of the TL-SM311 series were introduced to expand the transmission distance of your Managed/Websmart switches. These can expand the distance by several kilometres, or even several dozen kilometres, which can essentially cover the LAN's distance requirements. The user can choose as needed which elements should use the fibreglass modules in order to lower costs. Single-mode Mini GBIC Module Can be used with the devices TL-SG5412F/5428,TL-SL5428E,TL-SG3210/3216/3424/3424P,TL-SL3428/3452, TL-SG2210/2216/2424/2424P, TL-SL2210/2218/2428/2452, TL-SL1351 and MC200L. https://elecena.pl/product/18332005/tl-sm311ls-mini-gbic-sfp-lc-1000-base-lx 2021-05-05 https://elecena.pl/product/18332005/tl-sm311ls-mini-gbic-sfp-lc-1000-base-lx 2022-09-18 https://elecena.pl/product/18332005/tl-sm311ls-mini-gbic-sfp-lc-1000-base-lx 2022-12-31 https://elecena.pl/product/18332005/tl-sm311ls-mini-gbic-sfp-lc-1000-base-lx 2025-08-14