ATTO driver for UL5D card (osx_drv_epicu320_443) MAC

I didn't either. I have on my Mac...

ATTOExpressSASHBA2.kext

ATTOExpressSASHBA2

ATTOCelerityFC8.kext

ATTOCelerityFC8.kext

ATTOCelerityFC8

ATTOExpressSASRAID2.kext

I wonder if those would work?

Have you looked here?

https://www.atto.com/downloads/

https://archive.org/details/ATTO_ExpressPro_Tools_Drivers_CD_WinMac_1999_Eng

Except we cant exchange eMails here.

Driver for ATTO UL5D PCI-E SCSI card - Apple Community

Might ask over on...

https://x704.net/bbs/