The Acer AAHD3-VC is a proprietary motherboard used in Acer desktop systems like the Aspire ATC-105-UR11. Because it is an OEM (Original Equipment Manufacturer) part, Acer does not provide a standalone motherboard manual; however, you can find the general system manual on the Acer Support Site by entering your system's SNID or Serial Number. Key Hardware Specifications
Connecting case wires (Power/Reset/LEDs) to the proprietary header is a common challenge. Based on technical community layouts for this board: Pin Number Assignment Polarized? 1 & 3 Hard Drive LED (HDD LED) Yes (+ Pin 1) 2 & 4 Power LED (PLED) Yes (+ Pin 2) 6 & 8 Power Switch (PWR_SW) 5 & 7 Reset Switch (RESET) 12 & 14 Yes (+ Pin 12) acer aahd3vc motherboard manual exclusive
Exclusive Tip: Unlike standard motherboards that separate Power and Reset across a single row, the AAHD3VC uses a 2x5 block. If you are transplanting this board into a new case, you will need a single-block DuPont connector or manually connect individual jumper wires. The Acer AAHD3-VC is a proprietary motherboard used
This board is designed for AMD APUs and is incompatible with Intel processors. SATA 3
| Header | Pins | Purpose | |--------|------|---------| | Front panel | 9-pin proprietary | Power SW, HDD LED, Reset SW, Power LED | | USB 3.0 | 19-pin | 2 × USB 3.0 ports (front) | | USB 2.0 | 9-pin | 2 × USB 2.0 ports | | Audio | 7-pin AC’97/HD Audio | Front mic + headphone | | SATA power out | 4-pin (Berg) | Supplies power to slim ODD or SSD (uncommon) | | COM port | 10-pin (RS-232) | Legacy serial header | | CPU fan | 4-pin PWM | Supports up to 1A | | System fan | 3-pin DC (or 4-pin) | One near rear I/O | | CMOS clear | 2-pin jumper | Near battery | | BIOS SPI | 8-pin | For flashing without CPU |