Section B — Practical identification and wiring (3 × 12 = 36 marks) 5. You are given a small labeled PCB marked “IPISB-VR Rev 1.01 — Front PANEL” and a 9-pin header with pins labeled: PWR_LED+, PWR_LED-, HDD_LED+, HDD_LED-, PWR_SW, RESET, USB_VBUS, USB_D-, USB_D+, GND. Draw a clear wiring diagram showing how to connect a case’s:

The is a solid, reliable motherboard for budget builds or repairs—once you conquer its front panel puzzle. Remember the golden rules:

Pins are arranged in two rows. The (1, 3, 5, 7...) is closer to the center of the motherboard, while the even-numbered row (2, 4, 6, 8...) is closer to the motherboard's edge.

Many Acer cases (e.g., from the M3910) use a single 8-pin block. You cannot plug this block into the 9-pin header directly. You have two options:

The industry standard for front panel headers is usually a row of pins where "Ground" and "Power" are specific pins (often Pins 6 and 8 in older standards, or isolated pins in newer ones).

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