I don't know how the later versions of the USB adapter differ from the first, but ISTM that the earlier version could be upgraded by replacing the SN74AHC1G14 IC nearest to the HDD header with an MC74VHC1GT04 or SN74LV1T04.
MC74VHC1GT04, ON Semiconductor, Inverting Buffer / CMOS Logic Level Shifter, 1.8V to 3V logic, TSOP-5, Vih = 1.4V, Vil = 0.53V @ 3.3V:
https://www.onsemi.com/pub/Collateral/M ... GT04-D.PDFSN74LV1T04, Texas Instruments, Single Power Supply Inverter Gate CMOS Logic Level Shifter, 1.8V - 5.5V, SOT-23(5), Vih = 1.35V, Vil = 0.8V @ 3.3V:
http://www.ti.com/lit/ds/symlink/sn74lv1t04.pdf