Keychron K5 Max vs K9 Max: Slim Keyboard Differences
By Keychron | Custom Mechanical Keyboards for Mac, Windows ... | Published: 2026-10-20
Category: Comparisons
Compare the Keychron K5 Max and K9 Max wireless mechanical keyboards. See layout size, switch options, and which slim keyboard fits your setup.
Quick answer
Choose the Keychron K5 Max if you need a full-size layout and Gateron low-profile switches. Pick the Keychron K9 Max if you want a compact 60% layout and lighter portability.
Layout size: full workspace vs compact travel
The K5 Max uses a 100% ISO layout, so every key is where you expect it. That makes it a direct replacement for a standard full-size keyboard without relearning finger positions. The K9 Max uses a 60% layout, which shrinks the number pad and clusters the navigation cluster. You gain desk space and carry weight, but you lose dedicated keys unless you remap them in the Keychron Launcher.
Switch options and hot-swap flexibility
Both keyboards use hot-swappable low-profile switches, but they are not the same type. The K5 Max works with Gateron low-profile MX mechanical switches, while the K9 Max uses Keychron Milk POM switches. The Gateron MX line gives you a wider aftermarket for different actuation forces and sounds. The Milk POM switches are specific to Keychron, which means fewer replacement choices but a more tuned feel out of the box.
Trade-offs at a glance
- Full-size familiarity vs compact portability: The K5 Max keeps every key in place; the K9 Max saves desk space and is lighter to carry.
- Switch ecosystem breadth vs tuned out-of-box feel: K5 Max accepts Gateron low-profile MX switches (many options); K9 Max uses Keychron Milk POM switches (fewer options, but matched to the board).
- Price difference: K5 Max lists at USD 80.49 (compared to USD 114.99); K9 Max lists at USD 59.99 (compared to USD 99.99). If budget is tight, the K9 Max is the lower entry point.
Product facts
- Keychron K5 Max QMK Wireless Custom Mechanical Keyboard ISO Layout Collection: Supports 2.4 GHz, Bluetooth, and wired connection; includes LSA profile keycaps for Windows and macOS; hot-swaps with Gateron low-profile MX mechanical switches. You can switch between wireless and wired modes, and the Gateron MX compatibility means you can customize the typing feel with widely available switches.
Keychron K5 Max QMK Wireless Custom Mechanical Keyboard ISO Layout Collection - Keychron K9 Max QMK Wireless Custom Mechanical Keyboard: Supports 2.4 GHz, Bluetooth, and wired connection; includes LSA profile keycaps for Windows and macOS; hot-swaps with Keychron Milk POM switches. The dedicated Milk POM switches are tuned for a specific feel, so you get a consistent typing experience without hunting for third-party parts.
Keychron K9 Max QMK Wireless Custom Mechanical Keyboard
Which one fits you?
Best for
- Anyone who wants a full-size wireless mechanical keyboard with familiar key placement and wide switch choice (K5 Max).
- Travelers or minimalists who want a compact wireless keyboard with a consistent switch feel and lower price (K9 Max).
Not for
- Users who need a dedicated number pad and full navigation cluster should skip the K9 Max.
- Anyone who wants a wide selection of third-party switch upgrades should avoid the K9 Max.
