This was mounted with the discharge of the A2090a, which incoporated a custom bootblock design and autoboot. A2090-Non Autoboot HD Controller -Has phrases "A2500 Hard DISK CONTROLLER" printed on the board -Doesn't have three ROMs, for Autoboot on it. http://Baboso.com/__media__/js/netsoltrademark.php?d=bestbuykub.com