The Asus ROG Falchion Ace HFX is a wired, high-profile mechanical gaming keyboard built in a compact 65% layout, measuring 315 mm wide, 115 mm deep, and 35 mm thick, with a total weight of 643 g. It uses a gasket mount construction and connects via USB, featuring a detachable cable for added convenience. The polling rate reaches 8000 Hz, and the keyboard is not designed for Mac use. Physical dimensions aside, it carries a one-year warranty and does not include a detachable cable — correction: it does include one, making cable replacement or customization straightforward.
The keyboard features a plastic case in black with a steel plate, giving the build a solid internal structure. It includes RGB backlighting directed north-facing, which allows the lighting to shine through keycap legends more effectively. Adjustable feet are present for typing angle customization, though no wrist rest is included in the package.
This keyboard uses the ROG HFX, a linear Hall effect switch with an actuation force of 55 g and a total travel distance of 4 mm. The actuation point is adjustable across a wide range, from as low as 0.1 mm up to the full 4 mm of travel, offering considerable flexibility in how the switches respond to input. The switches are also hot-swappable, allowing them to be replaced without soldering.
The keyboard supports rapid trigger and adjustable actuation, giving users fine control over how and when keypresses register, while analog input adds another layer of input precision. Full N-key rollover (NKRO) ensures every simultaneous keypress is detected without conflict, and a USB passthrough port provides a convenient extra connection point. Dual actuation and an onboard display are not included, and the keyboard does not support QMK, ZMK, or VIA, meaning firmware customization is limited to whatever native software is provided.
The keyboard uses an ANSI (United States) layout with a standard key arrangement, making it broadly compatible with common keycap sets. Keycaps are PBT double-shot shine-through in an OEM profile, a construction that allows backlighting to pass through the legends while resisting wear over time. Dedicated media keys are present for direct playback control, though there is no rotary dial included.
