https://community.hpe.com/t5/switches-hubs-and-modems/lx-and-sx-connections/m-p/3319849#M3221 Hello Mike,<BR /><BR />Funny that it works, you must have a very short cable between them. Unfortunatly this is not supported. My advice is to put a LX Gbic in the procurve.<BR /><BR />Kind regards,<BR /><BR />SCOOTER Thu, 01 Jul 2004 03:25:46 GMT SCOOTER 2004-07-01T03:25:46Z https://community.hpe.com/t5/switches-hubs-and-modems/lx-and-sx-connections/m-p/3319848#M3220 I have a firewall GigE card with an LX GBIC built in connected to my Procurve 2948. The Procurve has a Mini-GBIC which I think is SX.<BR /><BR />I think that we now have a multi-mode fiber with LX on one side and SX on the other. This connection works, but there does seem to be some performance issues (some sort of "cap" of bandwidth throughput). Could this be the an issue?? Does the wavelength mis-match make a difference?? Wed, 30 Jun 2004 19:15:52 GMT https://community.hpe.com/t5/switches-hubs-and-modems/lx-and-sx-connections/m-p/3319848#M3220 Mike Carlson_2 2004-06-30T19:15:52Z https://community.hpe.com/t5/switches-hubs-and-modems/lx-and-sx-connections/m-p/3319849#M3221 Hello Mike,<BR /><BR />Funny that it works, you must have a very short cable between them. Unfortunatly this is not supported. My advice is to put a LX Gbic in the procurve.<BR /><BR />Kind regards,<BR /><BR />SCOOTER Thu, 01 Jul 2004 03:25:46 GMT https://community.hpe.com/t5/switches-hubs-and-modems/lx-and-sx-connections/m-p/3319849#M3221 SCOOTER 2004-07-01T03:25:46Z https://community.hpe.com/t5/switches-hubs-and-modems/lx-and-sx-connections/m-p/3319850#M3222 What's more wierd? There's no such model as a 2948. Fri, 16 Jul 2004 18:00:30 GMT https://community.hpe.com/t5/switches-hubs-and-modems/lx-and-sx-connections/m-p/3319850#M3222 Stuart Teo 2004-07-16T18:00:30Z