The original UltraSound cards we now call the "classic" cards. This card is unique in the fact it uses a bank of 8 chips for memory. It also has a double row of pins near where the card plugs into the ISA bus.
+
+
* UltraSound MAX:
+
This card is unique in the fact it uses three ribbon cable connectors on the end of the card that support Sony, Mitsumi, and Panasonic drives. It also has jumpers for setting the DMA an IRQs for the CDROM controller circuit built into the MAX.
+
+
* UltraSound ACE:
+
This card is unique in the fact that it only has a line-in and a line-out connector on the external bracket. It's also a short card that's barely bigger than the slot it's plugged into. It's the only UltraSound with an Adlib Enable/Disable jumper on it.
+
+
* UltraSound PnP/PnP Pro:
+
These cards both have dual SIMM sockets on the end of the card. The Pro version has a bank of jumpers at the top of the card as well as a 1/2 meg RAM chip soldered onto the card so when there are no SIMMs on the card, IWINIT - V9 still reports 1/2 meg of memory.
+
+
* UltraSound Extreme:
+
This card has an ESS chip, and it is pre-filled with 1 MB of memory. No other UltraSound cards have an ESS chip (Sound Blaster Pro compatible chip).
+
+
Most of all the cards above, with the exception of the Classic, have their names printed on the cards. If you've had your UltraSound for more than 2 or 3 years, then most likely you have the Classic.