Type: USB3.0 four-interface expansion cardInterface: PCI-E X 1Compatible PCI slot: X1-X4 / x8 / x16USB interface: 4 X USB3.0Transfer rate: 5 Gb / s USB3.0Applicable models: conventional officeSupport System: Windows XP32 / 64 Windows 7 (32/64) windows8 / 8.1 windows10high speed operation core, high compatibilitythe card comes with a 2A power supply and does not need external power supply, 330 12X12mm inductor is better than 100 10X10mm.each interface is equipped with an independent interface protection fuse and immediately shuts off the power in case of external USB short circuit or overcurrent, protects external devices and the computer from damage, automatically becomes normal again after troubleshootingeach interface equipped with an independent regulated capacitor, guarantees a smooth power supply without interface, can also undertake 250 Celsius with a solid chip capacitor, a strong endurancewith gold immersion process, good electrical conductivity, strong antioxidant capacity, it can guarantee stable transmissionNet Weight: 61gProduct Size: 120X66X22mm / 4.73X2.6X0.87 inchcolour:blackMaterial:ABS+ metalPackage Contents:1 * Expansion Card1 * ScrewOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.