There is a proper amount of taken.
I climbed a tower "mini server" with (= 1 SSD, 6 HDD, optical drive ...) with, and I had to go through MOLEX / SATA converters (that was expected).
There is a 3 SATA cable, 2 SATA, 4 MOLEX, cord for PCI-E, and if the 24-pin + 8-pin is "not flexible" (normal) ... I do not count the FDD power supplies , but they are there.