Corsair K55 RGB PRO: problems, parts and running costs

Checked: 2026-10-17

Summary

The K55 RGB PRO is a budget full-size membrane gaming keyboard, and the problems owners report are mostly software: after the iCUE 5 update it loads its stored onboard profile at boot instead of your settings, firmware updates fail and loop, and occasionally most keys stop responding until a hard reset. There are no parts or consumables to buy and no subscription, so keeping it running costs nothing beyond electricity. At $50 or below it is an easy recommendation; above $65 mechanical boards with per-key RGB make more sense.

Common problems and fixes

iCUE 5 overrides your settings at boot — Corsair forum users report that after the iCUE 5 update the keyboard loads its onboard profile instead of the current iCUE configuration, which one user called “so buggy”; no fix is documented. [16]
Firmware updates fail and loop — Reddit users report iCUE firmware update failures where the keyboard disappears from the software mid-update and gets stuck in a firmware-update loop; no fix reported. [20]
Most keys stop working — owners report most keys not responding; the fix passed around is a hard reset: hold FN+F4 while plugging the keyboard back in. [21]
Zone-lit RGB, not per-key — each of the five zones takes one color and individual keys within a zone cannot be controlled, a limitation next to the XT variant’s per-key lighting; no fix short of buying the XT. [1][2]
All-plastic build and large footprint — the light plastic body feels less stable than heavier keyboards, and the macro-key layout takes significant desk space. [1][15]
No wireless option — wired USB 2.0 only; no fix. [2]

Parts and consumables

No replaceable parts or consumables reported. It is a sealed membrane board, not hot-swappable, with no user-serviceable parts documentation found. Hardware defects are covered by Corsair’s 2-year warranty. [5]
In the box: keyboard, quick start guide, safety leaflet and warranty card; the frustration-free packaging variant explicitly includes the detachable soft-touch palm rest. [5][8]

Yearly running cost

Nothing to spend after purchase: no replaceable parts or consumables, no subscriptions, and it draws power from the USB port (5V 600mA), so the only running cost is electricity, which no source prices. Running cost is effectively $0 a year beyond power.

When it is a good buy

At $50 or below — strong value: dedicated macro keys, media controls, IP42 resistance and 1,000Hz polling are uncommon at this price. Laptop Mag noted a $49.99 street price in March 2021. [4]
$51–65 — still good for quiet membrane typing; PCMag’s June 2023 review put the list price at $59.99 and recorded $62.99 at Best Buy. [1]
$66–80 — fair; Corsair US listed $69.99 in October 2026, where mechanical boards with per-key RGB start to compete. [5]
Above $80 — weak value; another Corsair page showed $89.99 in October 2026, and the budget build and membrane switches are hard to justify there. [13]
Refurbished alternative — Corsair’s Revival Series sells this exact keyboard at $29.99 with a 90-day warranty (October 2026); the better choice when the budget is tight and a shorter warranty is acceptable. [11]