本帖最后由 909648183 于 2018-3-10 22:00 编辑
在最新的SATA v3.3标准中,如果SATA供电的pin3真的接上了3.3V供电,会导致HDD进入Power Disable (PWDIS) 模式,直接无法启动,这时反而需要4针D口转接的SATA供电了,因为转接的时候1-3pin根本就是断开的
Pin 3 in SATA revision 3.3 has been redefined as PWDIS and is used to enter and exit the POWER DISABLE mode for compatibility with SAS specification. If Pin 3 is driven HIGH (2.1–3.6 V max), power to the drive circuitry is disabled. Drives with this feature do not power up in systems designed to SATA revision 3.1 or earlier. This is because Pin 3 driven HIGH prevents the drive from powering up
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