Precision 3660 - big disappointements

With a recent (2 weeks) Precision 3660 I feel I get my first big disappointement with a Dell PC ever (and I owned quite a few of them).

- USB controller latency ( see : https://www.dell.com/community/Precision-Tower-Workstations/Precision-3660-latence-USB/td-p/8306509 )

- No sound on the back audio minijack

- No mic support on the front minijack (only audio out, microphone feature not detected)

- Very loud noise if you place a standard 3.5 HDD (mechanical) in the front enclosure

- Bios that doesnt recognize keyboard if you set a boot password and try to hit F12 to enter bios.

- Bios that doesnt allow booting from USB UEFI device (not recognised as a bootable device), but allow boot from UEFI CDrom with the exact same image on it

Well, well, that's not really professional for a range called "Precision". I remember my old M6500 Precision notebook which was just fantastic !

I really cant recommend this 3660 range of Dell PC.