Leopold FC660C
The FC660C gave Topre fans a compact board with real arrow keys. It has 66 keys, with dedicated arrows plus Insert and Delete on the right, in a case only a little wider than a 60%. Leopold developed it with Topre, the Japanese company behind the switch and the Realforce boards. The switches are 45g Topre electro-capacitive domes, the same weight on every key and plate-mounted like a Realforce, so you get Topre's rounded bump and a soft thock at the bottom. The keycaps are thick PBT, laser-etched or dye-sublimated depending on the version, and the space bar is ABS. Fn with the arrows gives Home, End, Page Up and Page Down, and four DIP switches swap Caps Lock and Control or Windows and Alt. A capacitance equation printed on the front right of the case is a nice tell. Its twin, the FC660M, looks almost the same with Cherry MX switches.
SwitchTopre
Spec at a glance
Versions
Which Leopold FC660C is it?
The FC660M has the same case and 66-key layout with Cherry MX switches, and the only obvious difference in a photo is the letter on the label. Leopold's Bluetooth FC660MBT is also a Cherry MX board, and Leopold's Bluetooth line doesn't include a Topre FC660C. Deskthority lists a US/Korean version with lasered legends and English versions in white and black with dye-sublimated legends.
What to check
Leopold's manual lists Windows only and says Mac OS isn't supported. The ABS space bar is the one cap likely to go shiny while the PBT caps around it stay matte.
- 01C, not M: Read the label on the underside in the photos. It should say FC660C, because the FC660M is the Cherry MX twin.
- 02Topre feel: Ask for a slow video pressing keys across the whole board. Each key should have the same rounded bump and spring back cleanly, with none feeling heavy or sticky.
- 03Stock or modded: Ask the seller whether it has been opened, silenced or modified. A stock board with an unbroken back is the easiest to judge.
- 04Space bar: Look at the space bar in the photos, the board's only ABS cap. A little shine there is normal, and the PBT caps should still look matte.
- 05Chatter: Ask for a typing test video at keyboardtester.com or similar. Every key should register once per press.
- 06Cable: Check the photos for the Mini-USB port and the cable. Any Mini-USB data cable replaces a missing one.
New to used keyboards? How to check a used keyboard covers chatter, stabilizers, keycap shine and the rest in detail.
Find one on eBay
We haven’t been through this board’s listings yet. Search eBay and run every listing through the checklist above. Ask for a short video of every key being typed, and pass on any seller who won’t send one.
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