Asrock 90SSXG6X0-A0110000A RM23712-C622LM 2U; 1+1 Socket for 2nd Gen. Intel Xeon; 12 Hot-swap 3.5 SAS /SATA drive bays [Front] + 2 Hot-swap 2.5'' SAS /SATA drive bays + 2 Hot-swap 2.5'' NVMe drive bay