Quick overview from the supplier:
MB ASRock Z390 PRO4 ATX
// CPU
Supports 9th and 8th Gen Intel® Core™ Processors
Chipset
- Intel® Z390
Memory
- Dual Channel DDR4 Memory Technology
- 4 x DDR4 DIMM Slots
- Supports DDR4 4300+(OC) / 4133(OC) / 4000(OC) / 3866(OC) / 3800(OC) / 3733(OC) / 3600(OC) / 3200(OC) / 2933(OC) / 2800(OC) / 2666 / 2400 / 2133 non-ECC, un-buffered memory
Graphics
- Supports Intel® UHD Graphics
- Three graphics output options: D-Sub, DVI-D and HDMI
- Supports Triple Monitor
- Supports HDMI 1.4 with max. resolution up to 4K x 2K (4096x2160) @ 30Hz
- Supports DVI-D with max. resolution up to 1920x1200 @ 60Hz
- Supports D-Sub with max. resolution up to 1920x1200 @ 60Hz
Audio
- 7.1 CH HD Audio with Content Protection (Realtek ALC892 Audio Codec)*
LAN
- Gigabit LAN 10/100/1000 Mb/s
- Giga PHY Intel® I219V
Slots
- 2 x PCI Express 3.0 x16 Slots (PCIE2/PCIE4: single at x16 (PCIE2); dual at x16 (PCIE2) / x4 (PCIE4))
- 3 x PCI Express 3.0 x1 Slots (Flexible PCIe)
- Supports AMD Quad CrossFireX™ and CrossFireX™
Storage
- 6 x SATA3 6.0 Gb/s Connectors, support RAID (RAID 0, RAID 1, RAID 5, RAID 10
- 1 x Ultra M.2 Socket (M2_1), supports M Key type 2230/2242/2260/2280 M.2 SATA3 6.0 Gb/s module and M.2 PCI Express module up to Gen3 x4 (32 Gb/s)**
- 1 x Ultra M.2 Socket (M2_2), supports M Key type 2230/2242/2260/2280/22110 M.2 SATA3 6.0 Gb/s module and M.2 PCI Express module up to Gen3 x4 (32 Gb/s)**
USB
- 1 x USB 3.1 Gen2 Type-A Port (10 Gb/s)
- 1 x USB 3.1 Gen2 Type-C Port (10 Gb/s)
- 6 x USB 3.1 Gen1 Ports
- 5 x USB 2.0 Ports
https://www.asrock.com/MB/Intel/Z390%20Pro4/index.asp#Overview
