NEC PC-9821 Xa20/W30 with Sega Saturn Interface 

What is called Sega Saturn Interface by the seller, on this NEC PC-9821 Xa20/W30 Computer, is an expansion card by I-O DATA Japan, the IF-SEGA/98. It allows you to plug Sega Saturn controllers and use them with PC softwares. Different IF-SEGA cards were made for PC-98, ISA slots and PCI slots. One was also made to let you use the Virtua Gun on your PC. Not useful for modern PCs but interesting to collect (complete in box).
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