ASUS Prime X870-P-CSM ATX Motherboard

ASUS Prime series motherboards are expertly engineered to unleash the full potential of AMD Ryzen 9000 series processors. 

CPU
AMD Socket AM5 for AMD Ryzen 9000 & 8000 & 7000 Series Desktop Processors*
* Refer to https://www.asus.com/support/download-center/ for CPU support list.
Chipset
AMD X870 Chipset
Memory
4 x DIMM slots, max. 256GB, DDR5
Supports up to 8000+MT/s(OC) with Ryzen 9000 & 8000 & 7000 Series Processors
ECC and Non-ECC, Un-buffered DIMM*
Dual channel memory architecture
Supports AMD Extended Profiles for Overclocking (EXPO™)
ASUS Enhanced Memory Profile (AEMP)
* Adjustments will be made based on the specifications of mass-produced memory products available on the market.
* Supported memory types, data rate (speed), and number of DRAM modules vary depending on the CPU and memory configuration, for more information please refer to CPU/Memory Support list under the Support tab of product information site or visit https://www.asus.com/support/download-center/.
* Non-ECC, un-buffered DDR5 memory supports On-Die ECC function.
Graphics
1 x HDMI™ port**
2 x USB4 (40Gbps) ports support USB Type-C display outputs***
* Graphics specifications may vary between CPU types. Please refer to AMD CPU specifications.
** Supports 4K@60Hz as specified in HDMI 2.1.
*** Supports max. 4K@60Hz as specified in DisplayPort 1.4a.
*** VGA resolution support depends on processors' or graphic cards' resolution.
Expansion Slots
AMD Ryzen™ 9000 & 7000 Series Desktop Processors*
1 x PCIe 5.0 x16 slot (supports x16 mode)
AMD Ryzen 8000 Series Desktop Processors
1 x PCIe 4.0 x16 slot (supports x8/x4 mode)**
AMD X870 Chipset
2 x PCIe 4.0 x16 slots (support x1 mode)***
* Please check the PCIe bifurcation table on the support site (https://www.asus.com/support/FAQ/1037507/).
** Specifications vary by CPU types.
*** PCIEX16(G4)_1 and PCIEX16(G4)_2 share bandwidth with M.2_3. PCIEX16(G4)_1 and PCIEX16(G4)_2 will be disabled when M.2_3 runs.
- To ensure compatibility of the device installed, please refer to https://www.asus.com/support/download-center/ for the list of supported peripherals.
Storage
Supports 4 x M.2 slots and 2 x SATA 6Gb/s ports
AMD Ryzen™ 9000 & 7000 Series Desktop Processors
M.2_1 slot (Key M), type 2280 (supports PCIe 5.0 x4 mode)
AMD Ryzen 8000 Series Desktop Processors
M.2_1 slot (Key M), type 2280 (supports PCIe 4.0 x4 mode)
AMD X870 Chipset
M.2_2 slot (Key M), type 2242/2260/2280 (supports PCIe 4.0 x4 mode)
M.2_3 slot (Key M), type 2280 (supports PCIe 4.0 x4 mode)*
M.2_4 slot (Key M), type 2280 (supports PCIe 3.0 x2 mode)**
2 x SATA 6Gb/s ports**
* PCIEX16(G4)_1 and PCIEX16(G4)_2 share bandwidth with M.2_3. PCIEX16(G4)_1 and PCIEX16(G4)_2 will be disabled when M.2_3 runs.
** M.2_4 shares bandwidth with SATA6G_1 and SATA6G_2. M.2_4 will be disabled when SATA6G_1 or SATA6G_2 runs.
AMD RAIDXpert2 Technology
Ryzen 9000 Series Processors: RAID 0/1/5/10
Ryzen 8000 Series Processors: RAID 0/1
Ryzen 7000 Series Processors: RAID 0/1/10