They're basically THE company for buying cheap, but functional, networking bits-and-bobs-- either in bulk, or as an alternative to prowling ebay for smaller purchases.
I use them all the time for transceivers, cables, DACs, etc.
Absolutely. Highly regarded, excellent customer service and fast shipping.
My only complaint is their service is a bit too good- they’re used to dealing with businesses so you’re assigned a sales consultant even for a $100 order. But that also means you have easy access to a person if you have any concerns or questions.
I bought an SFP+ thingy three years ago and my sales consultant is a darling, we chat at least once a quarter. I haven’t bought anything since, but her kid recently graduated!!
Yes, it is. I have 4 10Gb SFP+ module couples and some other networking equipment going on for years and never failed. Their advisory/support is very good too.