English:Features: 1. Rear SATA3.0 interface: The new upgrade expands the rear four SATA3.0 interfaces, which is more suitable for narrow spaces. 2U can also be better fixed; from the rear wiring, there will be no crossover with the graphics card. 2. 4U, 2U universal: This product is equipped with 4U, 2U fixed dual brackets, which are supported by large or small chassis. 3. Larger heat sink: Better heat dissipation and more suitable for long working hours. 4. PCI-E interface: It is easy to install in the PCI-EXPRESS slot of the chassis with a thick gold-plated PCI-E interface. Better contact and easy data transmission can effectively reduce the data loss rate. 5. The tail is designed to be flush: the risk of blocking the graphics card fan is lower. 6. Four-layer PCB with insulation layer in the middle for better anti-interference ability. 7. Original mode selection: AHCI, IDE, data disk, three modes are free to choose. English: Specification: Model: SA3004 Bus interface: PCI-E X1 (compatible with X4, X8, X16/graphics interface) Number of interfaces: SATA3.0 interface * 4 System support: for Windows XP/2003/Vista/Win7/Win8/Win10 (32/64 bit) operating system Size: about 120 x 65 x 56mm (as pictures show) Weight: about 89g Package list: 1 x Expansion Card 1 x 2U Baffle 2 x Screws Note: Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.