[SIZE=10pt]Conner 3.5"[/SIZE]

[SIZE=10pt]From the label on an Apple HD 40 SC -[/SIZE]

[SIZE=10pt]Conner[/SIZE]

[SIZE=10pt]12V 250mA[/SIZE]

[SIZE=10pt]5V 275mA[/SIZE]

[SIZE=10pt]That could indicate overall power consumption of about -[/SIZE]

[SIZE=10pt]4.4W[/SIZE]

[SIZE=10pt]This Conner drive sounds like it is still functioning, it spins up (on a bench) when given power, makes one click, and then keeps spinning. However I see it has something like a rubberish gasket between the lid/cover and the rest of the assembly, which has me wondering about deterioration of the seal ?   ?     ???[/SIZE]

Elfen said:

A Solid State Drive like a CF in a SCSI Adapter would only take 1/2 a watt.

The SE Power supply is already stressed by powering up the analog board, the CRT Tube, the mother board and things on it like an add-on board, the drives, and the keyboard and mouse. Many people are in the belief that it was designed to handle such a load, when in fact it was designed to just barely handle such a load. So the system is already stressed out as soon as it comes out of the box.

Click to expand...

Thanks for mentioning some posts back about how the power consumption generally increases with drive capacity and rotation speed. I had incorrectly assumed the later larger drives would use less power because they had smaller components on the PC board.

So to nurse the power supply in an SE etc it is better to use an older smaller hard disk instead of swapping a bigger hard disk into an SE out of a later model (and I am also planning to fit a SCSI2SD).

I also found over the weekend that the current rating on the Irwin XL20 SE accelerator is 2.5A. It is not clear if that is 2.5A at 12V or 2.5A at 5V or some mixture, anyway, installing the Excelerator likely adds about another 12W (or more) to the load on the SE power supply.