When did double-shot keytops disappear?

[Sridhar Ayengar]

jpero at sympatico.ca wrote:
> By the way, I tried a generic ("Smart Adapter"; Ez-PU21) active PS/2 
> (keyboard & mouse) to USB adapter, works ok but not 90% perfect.  
> Fails on BIOS, certain OSes.  Which active PS/2-USB adapters that 
> does WORK well?

http://www.clickykeyboards.com/index.cfm/fa/items.main/parentcat/11298/subcatid/0/id/124184

Peace...  Sridhar