The AAHD3-VC has . Installing a modern SATA SSD will max out at ~280 MB/s (SATA II limit).

For detailed BIOS settings or troubleshooting, you can search for the Aspire TC-105 Service Guide on the Acer Community or official download portal. Acer Aahd3vc Motherboard Manual - Facebook

4 slots for DDR3 SDRAM , supporting up to 16 GB total. Expansion: 1x PCI Express x16 (for graphics cards). 1x PCI Express x1 slot. 1x standard PCI slot. Storage: 4 SATA ports for hard drives or SSDs.