Thank you for your response but NO this is not what i want.

I need QSFP to SFP breakout cable

The ones you wrote are just Extension cables SFP to SFP.

I need something ike this:

https://www.dell.com/en-us/work/shop/dell-networking-cable-40gbe-qsfp-to-4-x-10gbe-sfp-passive-copper-breakout-cable-3-meters-customer-install/apd/470-aaxg/networking#compatibility_section

but i dont see S4820T in compatibility list for this cable and also part number is missing  

Hey @vejan

I think I've found it. I give you a few options (check the description for more info):

27GG5 - QSFP+ to SFP+ Full-duplex 4-channel Copper Cable, 3 Meter
6GW14 - QSFP+ to SFP+ Full-duplex 4-channel active optical cable, 30 Meter, Finisar, (10.3125 Gb/s per channel)
9JT65 - QSFP+ to SFP+ Full-duplex 4-channel active optical cable, 50 Meter, Finisar, (10.5Gbps per channel)
HVVVF - Assembly, Cable, QSFP+-4XSFP+, Copper, 5M, America, American

Regards.

Ok . Thank you for response.

Strange that some part numbers are interpreted in certain countries differently.

For example:

27GG5 - QSFP+ to SFP+ Full-duplex 4-channel Copper Cable, 3 Meter

is same as

470-AAXG- (QSFP+) to 4 x 10GbE SFP+ Passive Copper Breakout Cable 3 M

The reseller asked Dell product manager to check that this type with part number is compatible.