引用:
Originally posted by AlexChou
我也試過2940uw的外接68pin介面,接轉接頭轉50pin,再接plextor原廠外接式scsi燒錄器也是不行.我問過德X,他們說只能用內接ultra scsi介面轉為外接50pin街頭再接燒錄器.使用外接68pin轉50pin不行,訊號特性不同.
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引一下Adaptec的FAQ
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Q:What is the AHA-2940U2W host adapter?
A:The LVD bus is auto-sensing and will step down to standard Ultra speeds and cable length limits if a SE device is connected.
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所以還是乖乖用SE bus接出來比較實在,而且用LVD(UW也一樣)外接narrow SE device時terminator要調成High:On Low:Off或Auto(Low byte terminator要用外接device上的),這就是我前面提到device不多時用IDE比較方便的原因...BTW,如果要外接時現在也有USB(2.0),IEEE1394等方式可用,不像SCSI要考慮LVD/SE,ID,terminator等等,對一般user也比較容易上手些....