[Elecraft] K1 - 2 band, is possible to add another 2 band PCB ?

[roney]

Hello, now that my Rig is ready, I want to ask something that wasn't clear
when I bought it.

In Elecraft website, there is a "*KFL1-2
<http://www.elecraft.com/k1_page.htm#K1%20Options> Additional 2 Band Module*";
I did not buy it, because I still don't know if it works.

I already have B1 as 3.500 mhz
I already have B2 as 21.000 mhz

If I buy and add the second 2 band module, can I have all together 4 bands
in my Rig ?
(Like adding B3 as 14.000 mhz, and B4 as 7.000 mhz)

Thanks
Roney PY1ZB