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-   -   Sandisk 1Gb CF - Type I or II? (

Roscoe Mar 15, 2003 3:18 PM

Sandisk 1Gb CF - Type I or II?
I know, sounds silly, but the package doesn't say. I need to get a PC card adapter and found both Type I and combo Type I/II, with the latter being twice a expensive. Can I assume a Type one PC card adapter is what I need to buy?

sjms Mar 15, 2003 6:18 PM

type II

voxmagna Mar 15, 2003 8:04 PM

Type 1 cards are thin. Type 11 are thick. A Microdrive is type 11, so to be future proof consider the type 1/11 reader.

Roscoe Mar 16, 2003 2:48 AM

Since I don't have a Microdrive to compare it too, define thin (not that I don't trust the previous post by sjms, but it already looks pretty thin to me :).

voxmagna Mar 16, 2003 3:38 AM


Since I don't have a Microdrive
Yes, but you have a pc connected to the internet and the answer from a Google search is here: If you don't trust this info, there are about 31,000 other sites to look at:

Roscoe Mar 16, 2003 3:41 AM

Yea, I know it's poor form to reply ones own post but... :)

According to the CF description within Steves:

The standard 1GB CF card from Sandisk is a Type I but in the picture at the bottom it looks identical in form factor as the Microdrive. Sandisk web site doesn't even mention Type I or II cards that I could find.

Anyone else as confused as I am? :?

NHL Mar 16, 2003 4:44 AM

A PC card (PCMCIA) slot has 3 types: type I, type II, and type III all identical size except for the thickness with type I being the thinnest, and Type III the thickest (ie some PCMCIA hardisk).

This is not to be confused with CF-I and CF-II, also identical in size except for the thickness, again with CF-II the thicker one. Most CF flash cards today are of CF-I type (3.3mm thick), the microdrive and larger/older flash cards can be of CF-II type (5mm thick). Sjms is right, it's a type II. Although a PC card type I adapter would have work just as well, but the thickness of the CF card could change the combination to a type II PC card because of the thickness of the CF card(ie 5mm vs 3.3mm) and not the PC card adapter in itself! :?

At 43mm (1.7") x 36mm (1.4") x 3.3mm (0.13"), the CF Type I card's thickness is less than one-half of a current PCMCIA Type II card. It is actually one-fourth the volume of a PCMCIA card. Compared to a 68-pin PCMCIA card, a CF card has 50 pins but still conforms to ATA specs. It can be easily slipped into a passive 68-pin PCMCIA Type II to CF Type I adapter that fully meets PCMCIA electrical and mechanical interface specifications.
They are all electrically identical, so if the adapter/CF combination can mechanically slide in your laptop slot, they would work!!! 8) 8) 8)

Roscoe Mar 16, 2003 7:09 AM

voxmagna, Don't mean to sound rude because I appreciate all efforts to help, but your post did not explain anything. It talks about PC card standards and pin-outs. I could not find where it tells me whether or not the Sandisk 1GB card is a CF-1 or CF-2 card.

This is important because I need an adapter now, and the only one one avialable is a Type I card. On the other hand, I would have have to wait on a Type I/II card, but if I don't need it....hence the dilemmna.

Question, is the adapter package talking about PC Card Type I or II or the CF card? Now I am doubly confused.

NHL Mar 16, 2003 8:49 AM

The Sandisk 1G flash is CF type I!


Question, is the adapter package talking about PC Card Type I or II or the CF card? Now I am doubly confused.
What does it says on the package? either way it would work. A PC Card type I would have worked in type II (and type III also), just because it's thinner. The converse is not true however since their size are thicker (ie a PC card type III would not fit a type I slot!!!).

The thinner Laptops are type I only with two (2) type I slots. You can still insert a type II PC card but it would encroach on the other slot depending how the slots are oriented, hence only one type II can be inserted or two type I instead (and are specs as such, either the top or bottom of this type I slot is type II compatible)... Still confuse?

Roscoe Mar 16, 2003 11:10 AM

Adapter just said Type I - I did not know if it was talking about the CF type or the PC Card type. I have since found pictures of the two types of CF cards nad confirm what you already knew.

Thanks for your patience.

PS My 7Hi has been shipped! WooHoo!

voxmagna Mar 17, 2003 6:22 AM

Roscoe... from the first link I posted for you:


The only difference between CF Type I and CF Type II cards is the card thickness. CF Type I is 3.3 mm thick and CF Type II cards are 5mm thick. A CF Type I card will operate in a CF Type I or CF Type II slot. A CF Type II card will only fit in a CF Type II slot. The electrical interfaces are identical. CompactFlash is available in both CF Type I and CF Type II cards, though predominantly in CF Type I cards. The Microdrive is a CF Type II card. Most CF I/O cards are CF Type I, but there are some CF Type II I/O cards
The difference in thickness is pretty obvious. Normally I'd measure it with a vernier, but you shouldn't have any problems with a Ruler! Type 11's came out to get more stuff in the cards. As long as the door opening is wide enough, or on a laptop there are 2 narrow (type 1) slots one above the other, but both flaps open together - there is enough headroom to fit in the thicker type 11 card. So I'd always buy a reader which can take the thicker type11 card, and Microdrive to be future proof. A 7HI can write a lot of big files so I'd definitely look further than 32Mb for media!

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