Trifecta EC 500
 connects to: Side Expansion Slot

Provides you with an IDE controller, and the ability to add up to 8MB of RAM in the form of 4Mbit ZIP chips. Has both autoconfiguring of memory and autobooting of which both can be disabled. Provides you with a 3.5" IDE connector. Has a GVP compatible expansion slot to add peripherals such as the GVP PC emulator card, and has it's own power supply. This is the fastest controller for the A500, bar none. It achieves speeds up to 10MB/sec using ultra-fast DMA techniques. The unit also has "game" switches to disable various features for maximum compatibility. Unlike the LX version, it does not have an external power supply.

Please note, it does not support Western Digital, or IBM hard drives.