Features: brand new and high quality The motherboard supports split PCI-E or PCI-E for RAID. PCI-E 3.0 and 4.0 transport protocols are supported. Using the latest JMB585 chip solution, high throughput and stable performance, committed to meeting the user's demand for massive data space. 4 SSD hard card for matrix structure, thickened PCB, secure PCIEX16 interface to care for your important data. Supported disk 4 In soft for RAID 10, the soft RAID4 disks are steady and stable. 4 drives correspond to 4 LED indicators, the LED lights up when the SSD is connected to it. SSD read and write LED can blinks. Specifications: Supported hard drives: for M.2 NVME SSD / for M. 2 PCI-E devices Transmission speed: 4 x 32Gbps Material: PCB Colour : Black Package Includes: 1PC x 20 Port Expansion Card note: Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!