Default Can ADB detect devices that's off?

I was just wondering, i got a One S and i think it got bricked. Some suggest me to use "adb reboot-bootloader" to get into Hboot to get into Recovery. It can't be switched at all. Ik its an irrelevant qn to our GWonder here but Im asking here cos the One S forum's devs all went away to another device..

CM11 Powered G-Wonder
Samsung Galaxy W (Ancora)
Dopod 838 Pro (hTC Hermes)