Unable to use non-Dell qualified cables?

I connected a couple of QSFP+ cables between my dell S6010 switch and another S6000. However, I can not get the "link" between them to become UP. 

As the manual states, that even though it may not be supported it should still work, but I am unable to get the link to become up? 

"You can use non-Dell qualified cables, adapters, and optics in a S4048-ON switch, but Dell Networking does not guarantee their performance as the S4048-ON does not support non-Dell qualified 40G transceivers."

Should I understand that even though Dell states that it should work, some cables won't be able to work? I found some Reddit users expressing the same problems.

https://www.reddit.com/r/networking/comments/5iikjc/dell_force10_unsupported_transceiver/

Would it be possible to get some information on whether I should expect some vendor cables to not work? Also from my understanding, there isn't any command to change this?

SWITCH OUTPUT:

6010-02#show inventory media
Slot Port Type Media Serial Number Dell Qualified
------------------------------------------------------------------------------------
1 1 QSFP 40GBASE-CR4 OP181011011 No
1 2 QSFP 40GBASE-CR4 OP181011012 No
1 3 QSFP 40GBASE-SR4 OP181011010 No**
1 4 Media not present or accessible
1 5 Media not present or accessible
1 6 Media not present or accessible
1 7 Media not present or accessible
1 8 Media not present or accessible
1 9 Media not present or accessible
1 10 Media not present or accessible
1 11 Media not present or accessible
1 12 Media not present or accessible
1 13 Media not present or accessible
1 14 Media not present or accessible
1 15 QSFP 40GBASE-SR4 OP181011009 No**
1 16 QSFP 40GBASE-SR4 OP181011008 No**
1 17 QSFP 40GBASE-SR4 OP181011007 No**

LOGS:

Nov 19 19:19:12 %S6010-ON:1 %IFAGT-2-TRANSCEIVER_UNSUPPORTED_ERROR: Transceiver in slot 1 port 16 unrecognized, putting interface in operational-down state
Nov 19 19:19:11 %S6010-ON:1 %IFAGT-5-UNSUP_OPTICS: Non-qualified optics in slot 1 port 15
Nov 19 19:19:11 %S6010-ON:1 %IFAGT-2-TRANSCEIVER_UNSUPPORTED_ERROR: Transceiver in slot 1 port 15 unrecognized, putting interface in operational-down state
Nov 19 19:19:10 %S6010-ON:1 %IFAGT-5-UNSUP_OPTICS: Non-qualified optics in slot 1 port 17
Nov 19 19:19:10 %S6010-ON:1 %IFAGT-2-TRANSCEIVER_UNSUPPORTED_ERROR: Transceiver in slot 1 port 17 unrecognized, putting interface in operational-down state