A fixing device for interface cards includes a seat. A plurality of spacers are installed on one surface of the seat. Several teeth are mounted on the top end of the spacer, while the lower portion thereof is formed with a holding device. Furthermore, a sliding block is slidably engaged on the top portion...http://www.google.com.tw/patents/US6174189?utm_source=gb-gplus-share專利 US6174189 - Fixing device for interface cards