The short version: Two external pull-up resistors of 10 kΩ on the PS/2 DATA and CLK signal lines (corresponding to USB signal lines D- and D+, respectively) are sufficient to interface to a PS/2-capable USB keyboard. Say, to get a macro …

PS/2 support on modern USB keyboards Read more »

Sometimes it can appear as if the Windows key on some keyboards has stopped working. But that is not the case. A Windows key lock has inadvertently been enabled! A Windows key lock feature is often found on keyboards intended …

Missing Windows key on some keyboards, e.g., Cooler Master CK550 V2 and Rapoo 700RGB Read more »

The short version: The Cooler Master CK550 V2 mechanical keyboard is fully capable of macros, including mouse operations (e.g., right-click) and cancelling macros in progress. Though non real-time macros and mouse operations in macros are only possible by using the Windows-based …

Low-cost fully macro-capable mechanical keyboard Cooler Master ‘CK550 V2’ Read more »

The short version: With default BIOS settings (which enable USB 3 ports) for the Gigabyte GA-970A-DS3P motherboard, the USB 2 ports do not work (at least in Linux), only the two external USB 3 ports. In Linux, the GRUB configuration parameter “GRUB_CMDLINE_LINUX” …

Enabling both USB 3 and USB 2 ports for the ‘Gigabyte’ GA-970A-DS3P motherboard Read more »