I have an older PowerBook, a “WallStreet”, which happens to be the last of the Apple PowerBooks to sport two PC Card slots. Beginning with the “Pismo”, they started saving vertical space by only providing a single card slot. (I haven’t paid much attention to PC laptops so I don’t know if the same is true for them as well or if two-slot models are still common).
Now, in the modern PowerBook specs, they usually express it as “accepts one Type I or Type II card” and since the single card goes in the single slot no one cares if it is a Type I or a Type II. But for my older model, the phrase was “accepts two Type I or Type II cards, or one Type III card”. And I have one of those critters, an ixmicro Road Rocket external display card. It’s a thick sandwich of a card and does indeed fill up both slots although electronically it only connects to the connection pins of the lower slot.
I just bought a new display card because ixmicro went out of business before the MacOS X era, so there is not and presumably never will be a MacOS X native driver for the Road Rocket. To that end, I bought a Village Tronic VTBookDD external display card, and like all modern cards it only takes up one slot (I don’t know if it is a Type I or a Type II). Well, it works, but compared to the old Road Rocket it’s a dog. The Road Rocket eats it for lunch on graphics benchmarks, sometimes throwing up more than 50 times as many megapixels per second as the VTBook.
Question: is this just shoddier engineering on the part of VT, or does (did) the Type III specification allow a card to pull twice the power of a Type I or II and that’s why the Road Rocket kicks butt?
And just for the heck of it, as long as I’m asking, what’s the diff between Type I and Type II?