This is the gold standard for staying within copyright laws. It usually involves using a "hacked" PS2 with a Free McBoot memory card to run a "BIOS Dumper" tool, which saves a copy of the firmware to a USB drive.
| Scenario | Recommended BIOS Configuration | | :--- | :--- | | | Enabled / Auto . Works for most users. | | Gaming (N-Key Rollover) | Enabled . Ensure "USB Emulation" is OFF (if option exists) to force the keyboard to use its native hardware buffer. | | Using a KVM Switch | Enabled . Some KVM switches emulate a PS/2 connection. Setting this to "Auto" sometimes causes the connection to drop when switching PCs. | | Troubleshooting Boot Issues | Enabled . You need the keyboard active during POST (Power On Self Test) to press F2/Del. | bios ps 2
This guide covers what the setting means, why it matters for modern vs. older hardware, and how to troubleshoot common PS/2 issues in the BIOS. This is the gold standard for staying within copyright laws