Connect 2 Prosafe GS748TPS over 150m

Thanks for that, but I am already using 3x 1Gbs fibre paths in a LAG as my existing configuration, the only problem is that when I change configurations (especially those of VLANs) I need to log into and change settings on both switches, this should theoretically be easier if switches capable of stacking were used and thus behaved as a single virtual switch.

The fundamental question was that can GS728TPS switches be stacked with the relevant stacking ports populated with fibre tranceivers rather than by using a direct attach cable?  And if it is possible and only a single connection existed would that be limited to 1Gbs rather than the 2.5Gbs allowed by using a direct attach cable, even if the fibre tranceiver module was capable of speeds higher than 1 Gbs, I assume it could be as none of your approved SFP fibre modules are rated for greater than 1Gbs and hence faster modules may not be supported even though the stacking ports themselves are obviously cable of 2.5Gbs.