Sorry to be late in on the discussion but.... I recommend an Adaptec ST-02 or ST-01 as I'm souping up a IBM PC portable 5155 to use a built-in CF card as a hard disk (look ma, no visible hard drives!) I tried an Trantor T-130 but it would read and not write to the drive (I tried it with a regular SCSI 40mb drive first). From doing a search on the problem, one might have to do an initialize by going into DOS debug and entering G=C800:0005 to start the utility program on the BIOS. But since I'm too lazy to try that, I got an ST-02 and put it in the 5155. No probs using any drive (the 40MB was an old Quantum out of a Mac). with Dos 3.30A to get extra partitions. The real fun was taking an ACARD 7720IU SCSI to IDE converter (AKA an ARS-2000IU), updating the BIOS to the latest version (3.86) and popping on a cheapo eBay male IDE-CF converter with a 64MB Sandisk CF card. The ST-02 and an ST-01 had no problems seeing the CF card. I had to fdisk the card on my Win 98 machine (Dos 3.30A fdisk saw extra non-dos partitions which it couldn't get rid of), but then the Dos 3.30A had no problems formatting C & D. I'm getting in a 128MB Sandisk to get some more 32MB paritions, but I think the Adaptecs are the best as far as my experience goes. The ST-01 doesn't have a floppy controller so it is a bit shorter and fits into the 5155 better. From what I can see from the labels the BIOS is the same as the ST-02 but I haven't looked that closely. This was a message from Gary Fisher