Seems to have only basic usefulness as a diagnostic tool. > Instantly tests SFP and QSFP module health, including Rx/Tx power. Most SFP modules will fail due

Seems to have only basic usefulness as a diagnostic tool. > Instantly tests SFP and QSFP module health, including Rx/Tx power. Most SFP modules will fail due to heat, like LED bulbs. So an instant test is of course instantly useful, but not indicative of production-use SFP health. As a programming tool, of course it's awesome. Of course, in typical ubiquiti fashion, it's out of stock with no way to backorder.