請教孤狗大神之後的答案是這樣的!!
Sega Saturn game pad to hit Japanese PCs

Sega will be releasing the Saturn’s game pad as a PC and Mac compatible USB device in Japan.

See it » TOKYO--Sega will be releasing its classic Saturn console game pad as a USB device for the PC and Macintosh. The company originally created the USB controller as an exclusive bonus to the Macintosh edition of Puyo Pop Fever, which saw a Japanese release on June 24. But as a result of heavy demand from fans, Sega decided that it will also sell the controller separately for both the Mac and the PC. Unlike the game pad included with Puyo Pop Fever, which was colored like the original Saturn device, the new game pad will match the pearly white of Macintosh products.

The Sega Saturn USB game pad will hit Japanese stores on July 23 for 3129 yen ($29). Preorders can be made at Sega's online retailer, Sega Direct.

結論根本就是SEGA自己賣的GamePad，至於哪裡買??
再度請教日本孤狗大神...關鍵字セガサターン コントロールパッド
有了...自己看吧!!
http://segadirect.jp/Catalog/Produc...U=0101006-00316
http://shop.tsukumo.co.jp/special.php?id=041105a
還有很多，請用www.google.co.jp
再用上面的關鍵字來找!!
就先看看能不能用信用卡訂購
不行就看看誰能幫您去日本帶一支回來吧!!
嗯...建議來個團購好了!!