Question

susan works in the research and development department. she recently purchased a large high - speed external drive and has attached the drive to her computer using a usb cable. her drive requires a minimum data transfer speed of 5 gbps and needs to have access to 600 ma/15 volts of usb power to function properly.
although the correct drivers are installed, when she plugs her drive into her workstation, the drive is not working. to troubleshoot the problem, she has connected her drive to her coworkers computer, where the drive functions properly. no additional cables are required for this drive.
which of the following is the most likely reason that susans external hard drive is not working?
susan has connected her drive to a usb 3.2 port, but the drive is only made to work with a 2.0 port.
susan has connected her drive to a usb 2.0 port, which does not have the required data transfer speed.
susan has connected her drive to a usb 3.2 port, which does not support the minimum data transfer speed required.
susan has connected her drive using a type - c cable, which does not have enough power for her drive.

Explanation:

1. Analyze Option A: USB 3.2 ports are backward - compatible and have higher speeds than USB 2.0. If the drive worked on a coworker's computer, it's unlikely it's only for USB 2.0. So A is incorrect.
2. Analyze Option B: USB 2.0 has a maximum data transfer speed of 480 Mbps (0.48 Gbps), which is much less than the 5 Gbps required by the drive. Since the drive works on the coworker's computer (implying the drive and cable are fine), a USB 2.0 port not meeting the speed requirement is a likely cause.
3. Analyze Option C: USB 3.2 ports can support speeds well above 5 Gbps, so this is incorrect.
4. Analyze Option D: Type - C cables can provide sufficient power (and the problem states no additional cables are needed, and the drive works on the coworker's computer, so power from the Type - C cable is not the issue). So D is incorrect.

Answer:

B. Susan has connected her drive to a USB 2.0 port, which does not have the required data transfer speed.