Some BIOSes do not correctly detect all keyboards. Updating your BIOS to the latest version should address the issue. If it doesn't, please contact our support team with the manufacturer and model number of your motherboard, and we can assist the manufacturer with an updated BIOS to correct the problem.
You can find a link to the latest firmware (version 2.11) here. The zipped file contains both the latest firmware and software versions for the K90. Double-click the firmware update file and follow the on-screen instructions. The firmware update may take up to a few minutes, and will display an update successful message upon completion.
K90 502(L) x 163(W) x 24(H) mm / 19.7” (L) x 6.4” (W) x 0.94 (H) K60 438(L) x 163(W) x 24(H) mm / 17.2” (L) x 6.4” (W) x 0.94 (H) M90 120(L) x74(W) x 40(H) mm / 4.7” (L) x 2.9” (W) x 1.6 (H) M60 118(L) x 77(W) x 39(H) mm / 4.6” (L) x 3.0“ (W) x 1.5 (H)
Cherry MX Red is the fastest action switch of the Cherry mechanical switch series. It has a non-tactile key feel while depressing, short 2mm makepoint travel distance, and does not have a loud “click” at the bottom. Cherry MX “red” keys are generally acknowledged to be among the best mechanical key switches for computer gaming.
Use the software export/import function on the right-click popup menu for G-Keys, mouse buttons (from “Button Assign” or “Key Assign”tab) or configured keyboard or mouse profiles (under “Manage Profile” tab).
In modern multi-core systems optimized for multi-threading tasks, the PS/2 system carries a larger processing overhead compared to USB handing. In addition, Corsair gaming USB devices use Full Speed USB, which exceeds PS/2 in data transfer .
It provides a very rigid construction. Due the rigid construction the aluminum top plate provides, the keyboard can’t be warped or flexed. This prevents stresses on the electronics PCB and switch assembly.
In our opinion, yes. The issue is mechanical switch vs rubber dome key technology. Both can have similar performance characteristics, even similar durability. But it is very difficult, but not impossible, to make a rubber dome key switch with the feel and actuation of a mechanical key switch.
Below is a diagram with the Cherry Red mechanical switch locations outlined in red. The picture shown is the K60, however the same locations hold true for the K90. The K90 macro buttons do not use Cherry Red switches.