Can you put a SATA 2 drive into a SATA3 slot?

3 times the performance of SATA III based SSD at nearly 2000 MBs 2 slots on the motherboard can have SATA and PCIe lanes going to the slot

2 slot can accept a PCIeNVME and not alternately accept a SATA I believe this is inherent in the architecture of the hardware But you ask: have you read

sata slot SATA ports should you plug an NVME in each of the sockets Worst case is use one of the 3 PCIe x16 slots for an add-in SATA controller card

sata m2 slot PCI x4 If that's correct, I presume I can't connect most SATA III controller cards into either of the standard PCI slots?