Toshiba Tecra M4 - Manual (Page 158)

TECRA M4 7-12
HW Setup
10 Min
If powered by batteries in a Fast Standby mode,
the computer will move to normal Standby mode
after maintaining the Fast Standby mode for
10 minutes.
15 Min
If powered by batteries in a Fast Standby mode,
the computer will move to normal Standby mode
after maintaining the Fast Standby mode for
15 minutes.