ADT-R37 PCIe5.0x16 to 4-Port U.2/EDSFF Hard Disk Split Card 4x128Gbps 1 to 4 Expansion Adapter Compatible with Gen3/Gen4/Gen5 (R37A 4.0, to 4* U.2)

R37A: PCIe x16 to 4-Port U. 2 Hard Disk Split Adapter Expansion Card. Speed bandwidth Gen4 x16.;
R37D: PCIe x16 to 4-Port E1. S/E3. S(SFF-TA-1002) Hard Disk Split Adapter Expansion Card. Speed bandwidth Gen5 x16.; Please first check whether the motherboard split is set to x4x4x4x4, if set x8x8 or x8x4x4 can not recognize the four disks; secondly, please confirm whether the slot where the adapter card is located to support the PCIe x16 full-bandwidth operation, please refer to the motherboard manual.; Support external power supply, external power supply protection, effectively avoid reverse current problems, to ensure the safety of the motherboard power supply;
Indicator Lights: D1-D4 represent the hard disk read/write lights of port 1-4 respectively, they are blinking when reading/writing normally; D5 is the power indicator, the D5 light is always on when the product is in normal state.