<grs4@ohm.york.ac.uk> wrote ...
> I've got an Enterprise E250 which is reporting a fan failure; does anyone
> know the specifications of the individual fans in the tray (to save
> me shutting down and opening up)?
>
The ones in the one I've opened here are marked
Nidec BETA V- with part number TA450DC,
Model B31256-81 SUN1
They show 12VDC and 0.49Amp
They all connect to 8-socket connector, so you may
have to do some soldering.

--
Tom Tobin.