The individual positions denote:
- Omron B3K series; the derivation of this is not known, but B may denote pushbutton
- T: tactile, L: linear
- Unknown; this may be one or two positions
- Unknown, but possibly indicates Logitech as the customer
- Possibly Mk II
Romer-G switches are available to buy through AliExpress and Taobao, but this is sadly not true of Creative PRES and Das Keyboard Gamma Zulu. The above part number breakdown comes solely from comparing the part numbers marked on Romer-G switches.
Creative are stubborn and unhelpful and refuse to assist with enquiries. Metadot, who I thought was a company run by keyboard enthusiasts for keyboard enthusiasts, seem unable to comprehend the idea of switches even having part numbers and have also proved to be a waste of time. Hopefully one day the PRES and Gamma Zulu switches will show up for sale just as the Romer-G switches have done.
|B3K-T13L||Logitech Romer-G||Black/blue/clear||Tactile damped|
|B3K-T13L2||Logitech Romer-G||Black/black/clear||Tactile||Mk II switch, with the damping prongs removed from the mould; factory lubricated|
|B3K-L13L||Logitech Romer-G||Black/black/grey||Linear||Linear version, also without the damping prongs; factory lubricated|
|Creative PRES||?/extra clear/clear||Tactile|
|Das Keyboard Gamma Zulu||Black/black/clear||Tactile|