External HDD not recognised in Mac Book Pro

I am trying to connect a external HDD to the MacBook Pro. The external HDD used is Seagate FreeAgent GoFlex 1 TB powered by a USB cord connected to the laptop. The light on the HDD is not glowing neither does it feel like moving when touched.
Can somebody come back with a solution to get the HDD working on the Mac?

By placing the HDD in a different enclosure, one would be testing if the enclosure circuitry is faulty. Since it works on a PC, then that is not the problem.
noondaywitch may be on the right track. I note that your HDD has an optional Firewire connector available. You might order that or get a 'Y' connector where there are two USB connectors that you would insert in two USB ports on your MBP thus gaining more power for the Seagate. No guarantees of success with either option.
Ciao.

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External HDD not recognised in Mac Book Pro

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