I remember in the mid-90s a customer had just prior to my contract with them starting deployed some 3COM enterprise core routers. They were having issues with connectivity to their Banyan Vines servers which I tracked down to an issue with the routers. 3COM had a bug fix but the routers required the use of 2.88MB floppies to upgrade them. Neither the customer or I had a 2.88MB floppy drive to write the upgrade to. It took 2 full days of searching to find anyone who could get me one in less than a month.