A video production workstation that will consist of two high-end GPUs will require a lot of power and a modular power supply. A modular power supply allows the technician to connect only the cables that are needed for the components, which reduces clutter and improves airflow. A 1,200W power supply should be enough to power the two GPUs and other components, but the exact wattage depends on the specifications of the GPUs and other components. A 400W external power supply is not enough to power the workstation and may not be compatible with the ATX case. Two 600W redundant power supplies are unnecessary and may not fit in the ATX case. A 1,500W uninterruptible power supply (UPS) is a device that provides backup power in case of a power outage, but it is not a replacement for a power supply unit (PSU). References:
https://www.comptia.org/blog/what-is-a-power-supply-unit

he main difference between T568A and T568B cabling standards is that the green and orange cables are interchanged12. T568A is designed for backward compatibility with older telephone wires, while T568B is designed for better signal isolation and noise protection for newer networking systems and products3. T568A is used in blue cables, and T568B is used in green cables1. The standards use the same cable connectors3.

The problem in this scenario is that the battery charger is not a USB device, but a device that plugs into a USB port to draw power. Therefore, it does not have a unique identifier that can be recognized by the peripheral security software, which is designed to prevent unauthorized USB devices from accessing the company's network or data. The security software cannot add the battery charger to its whitelist, and may block its power supply or generate alerts.
The best solution for this problem is to provide a USB to AC adapter for the battery charger, which is a device that converts the USB power output to an AC power input that can be plugged into a wall outlet. This way, the battery charger does not need to connect to the docking station or the computer, and does not trigger the peripheral security software. The user can still charge the camera's battery without compromising the company's security policy.
The other options are not advisable because they either do not solve the problem or create new risks. Option B, adding a powered USB hub to the docking station, may not work if the security software also monitors the hub's ports and detects the battery charger as an unknown device. Option C, disabling the peripheral security software for this user only, is a very bad idea because it exposes the user's computer and the company's network to potential attacks from malicious USB devices. Option D, replacing the battery charger with a USB device that has a unique identifier, is unnecessary and costly, and may not be compatible with the camera's battery.
References:
* CompTIA A+ Core 1 (220-1101) Certification Study Guide, Chapter 9: Security, Section 9.3: Device Security, Page 419
* CompTIA A+ Core 1 (220-1101) and Core 2 (220-1102) Pearson uCertify Course and Labs and Textbook Bundle, Chapter 9: Security, Section 9.3: Device Security, Page 420
* CompTIA A+ Core 1 (220-1101) and Core 2 (220-1102) Exam Cram, Chapter 9: Security, Section 9.3:
Device Security, Page 402

One of the possible causes of the error message "No input source" is that the LCD projector is not receiving any signal from the connected device, such as a laptop1. This could be due to a loose or faulty cable or connector, or an incorrect input source selected on the projector2. Therefore, the first troubleshooting step that the technician should take is to check the physical cabling and make sure it is properly connected and secured12.

Vertical lines in different colors on a laptop screen are often indicative of an issue with the liquid crystal display (LCD) itself. This could be due to a damaged display panel or issues with the connections between the display and the rest of the system. Replacing the LCD is the most likely solution to resolve this issue, as it addresses potential faults in the display hardware that are causing the visual artifacts.