作者-=M=-

http://forum.pcdvd.com.tw/images/smilies/smile.gif
http://images6.theimagehosting.com/26-116-103-03.JPG (http://www.theimagehosting.com)
IOGEAR GME322R 2-Tone 3 Buttons USB + PS/2 RF TrackBall Hand-Held RF Wireless Mouse w/Laser Pointer - Retail

是這種嗎？
但看上去是沒有滾輪的..