That is a ATI Rage Charger. Here's the link:
<http://www.ati.com/products/rageiic/3dcharger/index.html>
or a quick copy and paste:
Now there's an affordable way to enhance your PC's 3D/2D graphics and video performance with ATI 3D CHARGER. With ATI 3D Charger you can quickly and easily upgrade the graphics and video capabilities of your 486, or Pentium system. Based on ATI's 3D RAGE IIC and with 4MB and 8MB configurations, you'll enjoy improved 3D/2D graphics and true-color video playback in all your Windows and NT applications. ATI 3D Charger is available in both PCI and AGP versions and supports ATI-TV WONDER, the TV Tuner add-on board.
At-a-glance
32-bit 3D Graphics up to 1024x768
Outstanding 2D Graphics
Full-screen, Full-motion Video Playback
Supports ATI-TV WONDER
Available versions:
4MB AGP or PCI or 8MB AGP