Velleman VM 143

hello, i see in the documentation from the module that we can connect 2* 3w led module or 41W led module , but 23 =6

my question is can i connect 2* 3 1W ledrivers in serial connection ?

6 x 1W led in series will not work with the VM143.
The problem is not the power, but the voltage drop over the leds.