The transceivers (optical modules) are made according to international standards that are accepted by the IT industry. They are manufactured by a small number of specialized companies (Avago, Finisar, Agilent,..).
These companies produce transceivers that are then labelled with the IT manufacturers’ brands. These SFPs differ only in the label bearing the manufacturer's name. Some, such as Cisco®, HP® and Juniper®, even ask these companies to code the optical modules so that only their SFPs are recognised in their equipment. For these companies, the SFP business is a source of considerable revenue because they do not hesitate to multiply the purchase price by a factor in between 25 and 50 (SX SFP bought for less than $10 and sold for $500).
This is an easy way to massively improve their margins.
After comparing the companies present on the market, A.N.S. has selected FAIROPTICS, a brand of compatible transceivers.
These transceivers are guaranteed for 3 years, whereas most vendors do not guarantee their products for more than a year. We fully test them before dispatch and they can very often be "recoded" if a hardware replacement is necessary.
In terms of price, the FAIROPTICS SFPs offer you impressive savings in between 70 and 90%.
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To prevent their customers from using transceivers other than their own, they force them to use these products under threat of losing their warranties and the hardware support provided by the manufacturer. It is as if a car manufacturer were to threaten to cancel your warranty because you don't buy its tyres. Because there is no law to prohibit this practice and warranty blackmail scares customers, manufacturers continue to profit from it.