What does slots and SATA ports share the bandwidth mean?

slot sata 3   Dan slot and go

I ordered an sata III ssd for this Acer desktop, planning to install in into the m2 slot but now I am not sure that slot is compatible

No The SATA express slot uses the bottom two SATA 3 connectors along with the one on the far left for SATA Express, think of it as a bridge 2 NVMe slot on the motherboard to connect 5 SATA devices Provide 5 SATA ports via PCIe; Supports PCIe Gen3x2 transfer speed; Supports SATA III 6Gbps

shiowla slot 4,1-5,1 have SATA hardwired to the mainboard SATA ports 4,15,1 have SATA wired to slot 4 but likely very HDD Caddy SATA 3 Second Hardisk Slot Laptop di Tokopedia ∙ Promo Pengguna Baru ∙ Bebas Ongkir ∙ Pasti Ori ∙ Garansi 7 Hari ∙ Cicilan 0%