akko RAID 75 HE keyboard software
sharkfin identifies and reads the akko RAID 75 HE. Free and open source. Use it in a Chromium browser with nothing to install, or download the desktop app for Windows, macOS or Linux. Either way it runs entirely on your own machine: no account, and the browser version makes no network requests once the page has loaded.
What sharkfin does with the RAID 75 HE
- sharkfin will identify this board and read its settings, but it will not write to it. Its command set is not established, and the two protocol families in this hardware share opcodes that mean different things, so a misaddressed write would land on a live register.
- You can help: the app's Contribute tab collects a read-only data bundle to paste into an issue. That is how a board moves from read-only to supported.
- Magnetic switches. This board has them. sharkfin does not configure actuation or rapid trigger: the firmware does not answer those commands. Everything else on this page still works.
The picture sharkfin has for the RAID 75 HE knows the board's shape but not yet which internal slot each key lives in, so the first connection includes a check: the drawing is matched against the keymap your own board reports, you confirm it once, and from then on you remap on the picture. Until then the app shows a plain grid. The check exists because two boards can share one picture and still disagree about which slot a key lives in, and a wrong guess would send a remap to the wrong key. sharkfin trusts your keyboard over its own files.
RAID 75 HE at a glance
| Brand | akko |
| Model | RAID 75 HE |
| USB ID | 38ee:0016 |
| Device ID | 4049 |
| Protocol family | unknown |
| Settings writable | no, read-only |
| Drawn layout | after a one-time check |
| Onboard profiles | 4 |
A protocol family of “unknown” means sharkfin has not established which command set this revision speaks, which is exactly why it stays read-only.
Connecting
Plug the RAID 75 HE in with a USB cable, or use its 2.4 GHz receiver if it has one. Bluetooth has no configuration channel, so a Bluetooth pairing will not do. Settings are stored on the keyboard itself, so everything you change keeps working wirelessly once you unplug. sharkfin never flashes firmware, so there is nothing here that can brick the board. On Linux, both the browser and the app need a one-line udev rule before they can open the keyboard. And if you are hunting for a polling-rate or report-rate setting: there is none in sharkfin, because this hardware does not expose one.
If the RAID 75 HE stops responding
It happens: the firmware stops answering and the app says the board needs a replug. Typing keeps working the whole time. In order:
- Close sharkfin, or the browser tab. While either is open it keeps trying to reach the board.
- Unplug the cable, wait ten seconds, plug it back in. The board needs to lose power, not just reconnect.
- Fn + Home turns the lighting back on if the backlight looks dead.
- Fn + Esc, held for about three seconds, resets the board's settings.
None of this touches firmware; nothing here can leave the RAID 75 HE unusable.
Other akko boards
3084BP-ISO-DE · 3084BP-ISO-UK · 3084S · 3087S US · 3098B Plus · 3098S · 3108 V3 · 5075 V3 · 5075 V3 HE · 5075 V5 · 5075 V5 HE · 5075 V5 HE ISO · 5075 V5 HE TMR · 5075 V5 HE-B