Description This is a NEW Cisco SMFXLR-1-2488/B= 1 OC-48c/STM-16c single height BC, SMFXLR, SC connector MGX 8800 Service Modules' Back Cards SMFXLR-1-2488/B= SMFXLR-1-2488B_ SMFXLR12488/B=,SMFXLR-1-2488/B=