Perfect if you have an trusty old printer you want to keep using, but you bought a new motherboard (or even a new PC) that didn't have an old-style printer-port on it. Check before you buy, though - do you have a spare/empty standard PCI slot on the motherboard? Usually there are only two such slots. Fitting is so simple a baby could do it. The great advantage of one of these cards is, especially if you do a lot of printing such as in an office, they are three times faster at getting your data to the printer than using an on-motherboard socket. A possible alternative purchase - a parallel-to-USB converter socket - can't boast the same speed boost.