It is just a rebrand. I have at least one of those.

brian105 wrote on 2021-05-05, 18:35:

I managed to snag a card for $20 including shipping. It's not exactly Promise, but it's an OEM branded one (Maxtor SATA/150 PCI). It has the same chipset on it, and checking driver support reveals that it does support Windows 98. I've attached a picture of it (really awful picture from the seller) and the drivers to use for later.

Aside from the counterfeit ones, another you have to watch out for is a genuine Promise one, but it's an OEM that cannot be flashed with the Promise BIOS, and only has drivers for Windows XP. One giveaway is that they have a spot for an IDE port, but it's blank. Re: Dell OEM S150 TX2 BIOS

Agree ! looks nearly identical and should perform like a Promise SATA-TX2 if the rom is programmed the same....Am sure Maxtor would not put their name on it if it did not work well (have a few Maxtor PCI cards and they all work very well)

Repo Man11 wrote on 2021-05-06, 00:07:

brian105 wrote on 2021-05-05, 18:35:

I managed to snag a card for $20 including shipping. It's not exactly Promise, but it's an OEM branded one (Maxtor SATA/150 PCI). It has the same chipset on it, and checking driver support reveals that it does support Windows 98. I've attached a picture of it (really awful picture from the seller) and the drivers to use for later.

Aside from the counterfeit ones, another you have to watch out for is a genuine Promise one, but it's an OEM that cannot be flashed with the Promise BIOS, and only has drivers for Windows XP. One giveaway is that they have a spot for an IDE port, but it's blank. Re: Dell OEM S150 TX2 BIOS

At that point, I would desolder the BIOS chip and flash it with a hardware programmer and then either solder it back on or, better yet, install a socket on the board.

So I got the card, and it shows up in the boot process with Maxtor SATA/150 and whatnot, but says it can't find any disks and that the BIOS isn't installed. I'm not sure where to get the BIOS, though, since the Maxtor downloads only have Windows drivers. Should I just flash the standard Pr0mise SATA/150 TX2plus BIOS to it?