what pci x1 slots for: Mainboard MSI X570-A PRO. Main Slot. Mua BTC-B250C Motherboard with 2 DDR4 Memory Slots 12 ....
MEMORY CHANNEL. Dual.
DIMM SLOTS. 4. MAX MEMORY (GB). 128. PCI-E X16. 1. PCI-E X4. 1. PCI-E X1, 3. SATAIII. 6. M.2
SLOT. 2. RAID. 0/1/10. TPM (HEADER).
DIMM
SLOTS. 4 ; MAX MEMORY (GB). 128 ; PCI-E X16. 2 ; PCI-E X1. 2 ; SATAIII. 6.